Read the following passage and questions, then choose the right answer from options, the answer should be one of A, B, C, D.

<passage>:
In the past year, as we have witnessed the upending of the political order, the internet has been the theatre where many of the battles have been fought: from the hacking and leaking of Democratic party emails, to the proliferation of fake news and alternative facts, and yes, the outpourings of @realDonaldTrump. With domestic and geopolitical tensions rising, governments are finding it increasingly hard to function amid a constant barrage of uncontrollable information and potential cyber-attacks, making them grow more wary both of the internet's influence and their ability to control it. With globalisation under attack, the ultimate bastion of borderlessness – the global internet – might very well be one the biggest scalps taken by the newly emerging world order heralded in by Brexit and Trump. If a global orthodoxy of free trade, soft power and international organisations is overpowered by belligerent nations and isolationism, the net will inevitably be swept away with it. Weaponisation of the internet Since we've become dependent on the internet for almost everything we do, dangers to the network's integrity threaten devastating effects. Governments may be tempted to turn inwards in an attempt to shield themselves and their citizens from cyber-attacks. Last October, unknown hackers used an array of badly secured 'internet of things' (IoT) devices to bring down most of the internet on the east coast of America in one of the largest DDoS (distributed denial-of-service) attacks to date. While depriving Americans of Amazon and Facebook for several hours was surely an inconvenience, the potential of the weaponised internet to do harm is infinitely greater. As more of the components of a country's critical infrastructure move online, the number of possible targets grows too. Hackers shut down a significant part of Ukraine's electricity grid in 2015, and crippled several important Estonian industries, including its banks, in 2007. While cyber attacks and false information campaigns use the internet to attack the infrastructure by which our societies function, the internet's own infrastructure is also at risk. Despite the internet's ephemeral, lawless appeal, its underlying network of cables, tubes and wires is very much rooted in the physical world. Over 99 per cent of all global internet communications are facilitated by an impressive web of undersea cables, connecting all corners of the world. A submarine deliberately destroying one of these cables in a hard-to-reach place could bring down access to parts of the internet for weeks This became very clear after the 2013 Snowden revelations, which showed that the US routinely tapped into foreign internet traffic routed through the country. The massive scale of this monitoring even led then president of Brazil Dilma Rousseff to call for the construction of an undersea cable from Brazil directly to Europe, bypassing the prying eyes of the National Security Agency altogether. And US intelligence agencies are by no means the only ones doing this kind of snooping, as we know all too well. With various nations eyeing each other suspiciously and traditional alliances crumbling, building alternative structures to make foreign interference more difficult seems a logical consequence. Who rules the internet? This discussion will likely flair up again soon as the Trump administration seeks ways to reverse the Internet Assigned Numbers Authority (IANA) transition: an arcane but highly controversial policy issue. IANA is the agency in charge of maintaining the global DNS (Domain Name System) as well as managing Internet Protocol (IP) address allocation and other important basic structural functions of the internet. The internet’s IANA functions had traditionally been managed by the non-profit ICANN (the Internet Corporation for Assigned Names and Numbers), but remained under contract of the US Department of Commerce, which oversaw its processes – effectively leaving it under US government control. After almost 20 years of bickering and international kowtowing, IANA was brought under full ICANN control last October, finally becoming fully independent. This to the great dismay of many Republican lawmakers The Big Four Though the internet was initially heralded as the greatest democratiser of information since Gutenberg, most data now flows through only a handful of companies. Silicon Valley tech giants, with the 'Big Four' of Apple, Google, Facebook and Amazon at the helm, rake in most of the spoils of the all-conquering global online economy. In their ambition to expand even further, these tech companies are themselves also an important cause of internet fragmentation, erecting 'walled gardens' all over the world. Facebook's controversial Free Basics service, which offers free data plans to users in developing countries, but which restricts access to a small number of Facebook-approved websites, is a prime example. Some call it digital colonialism. These moves aimed at generating even more revenue, concentrated in the hands of the few as inequality rises, understandably cause concern among governments and citizens alike. But our main worry should not be about economics. The Big Four – controlling our data, as well as our access to information – wield an inordinate amount of power. Indeed, Denmark recently announced it would appoint a igital ambassador specifically to deal with these technology giants, citing their influence as larger than that of many countries. Foreign governments, which in the current political climate cannot rely on Google abiding by its mantra, 'Don't be evil', will aggressively start to pursue the construction of domestic alternatives. It is something we are already seeing happening worldwide. The splinternet Though the dream of the web internet pioneers was one of a completely open, non-hierarchical internet, over the years barriers have been springing up that restrict this freedom. Bit by bit, the internet is becoming more cordoned off. Russia appears to be following suit. Last November, Russia banned LinkedIn from operating in the country because the social network did not adhere to a new law decreeing that all data generated by Russian users should be stored within Russia itself. In recent weeks, news has also emerged that Moscow has been working with Beijing to implement something similar to the Great Firewall for its own domestic users. Democracies and autocracies alike have long come to understand the great power of the internet and have learned how to both harness and restrict it. While this is a moment of disharmony and uncertainty for the European project, the EU has much it agrees upon when it comes to policy and regulating the internet's mostly American corporate giants: from its ambitious data protection policies and the right to be forgotten, to Apple tax case. But it could do more. The global internet as we know it today began as a public space where everyone had an equal opportunity to use it as we liked. But it has quickly privatised, locking us into platforms that 'harvest' our data. As European citizens grow increasingly concerned about the negative impacts of the internet, the EU has a great opportunity. The EU should take a different approach to the internet and, rather than making it an unregulated free-for-all, consider it a 'commons': a public good open to all, excluding none. The EU could create and fund the infrastructure for this and help ensure safety for all. Meanwhile, small businesses and individuals would do their bit by creating a variety of tools to add to this commons, which would become fully interoperable through shared standards and underpinning technologies. One necessary component of such an internet commons is that it should be decentralised. Decentralising the internet and rethinking its structure would allow users to take back control over the network of networks, letting them manage their own personal data rather than giving it away to large companies, as well as offering them more choice over the tools they use. It is also often said that distributed internets would also inherently be much safer: largescale cyber-attacks are easier to prevent if we reduce the number of central nodes that traffic can travel through. Correction 20 February 2017: this article was updated to correct a few instances of 'web' to 'internet'

<question>:
How did the Trump administration put stress on the global version of the internet?

<options>:
A By allowing the Snowden revelations to be released
B By allowing the structural functions of the internet to fall out of US control
C By threatening to retake control of many of the structural functions of the internet
D By increasing the price of access to the internet for everyday citizens

<answer>:

C