sentence2_structure: This process<>takes<>the longest amount of time<>usually
sentence1: First, data has to traverse the network, and even traveling at the speed of light, it takes a significant amount of time to cross geographic distances such as the US continent or the Atlantic ocean.
sentence2: This process usually takes the longest amount of time: an ocean basin forms between two continents.
question: Which of the following processes usually takes the longest amount of time?