<s>[INST] The next text is a question of a member of the European parliament:"According to Directive2009/12/EC, and in particular Article4, referring to charges which airports apply to their users, the airport managing body should introduce charges which are appropriate to the quality of infrastructure and service provided by the airport. The above Directive, in force since March2011, obliges Member States to ensure that basic standards of transparency, non-discrimination and consultation between the airport managing body and airport users are applied to the overall network or in specific cases. Bearing in mind Article9(2) concerning the level of service provided and, more specifically, the rights to which airport users are entitled in return for airport charges:  Can the Commission demonstrate that, since being transposed into Spanish law, the criteria used for the application of charges are indeed based on the principles of transparency, objectivity and a clear set of criteria?  Is the Commission satisfied with the results?"
Analyze carefully the text and assign it to the most relevant policy area among those listed below. Do not explain your answer and return only a number.
Policy area numbers: 1 = Macroeconomics
2 = Civil Rights, Minority Issues and Civil Liberties
3 = Health
4 = Agriculture and Fisheries
5 = Labour, employment and pensions
6 = Education
7 = Environment
8 = Energy
9 = Immigration
10 = Transportation
12 = Law and Crime
13 = Social welfare
14 = Regional and Urban issues and Planning
15 = Banking, finance and domestic commerce issues
16 = Defence
17 = Space, science, technology, and communications issues
18 = Foreign trade
19 = International affairs and foreign aid
20 = Governance and government
21 = Public Lands, Water Management and Territorial Issues
23 = Culture and media
[/INST]. Answer = [10]. </s>
According to Directive2009/12/EC, and in particular Article4, referring to charges which airports apply to their users, the airport managing body should introduce charges which are appropriate to the quality of infrastructure and service provided by the airport. The above Directive, in force since March2011, obliges Member States to ensure that basic standards of transparency, non-discrimination and consultation between the airport managing body and airport users are applied to the overall network or in specific cases. Bearing in mind Article9(2) concerning the level of service provided and, more specifically, the rights to which airport users are entitled in return for airport charges:  Can the Commission demonstrate that, since being transposed into Spanish law, the criteria used for the application of charges are indeed based on the principles of transparency, objectivity and a clear set of criteria?  Is the Commission satisfied with the results?