Answer - C - Turkey has repeatedly applied to join the European Union (EU), but has not yet been accepted.
Key Takeaway: The European Union, commonly shortened to EU, is an economic and political union of twenty-seven member countries. The EU's membership has grown from six to twenty-seven by successive enlargements as countries agreed to the necessary treaties for membership. In doing so, the countries have continued to pool their resources in order to gain representation in important political institutions. Currently, there are three official candidate countries: Croatia, Macedonia, and Turkey. Turkey began full membership negotiations with the European Union in 2005, but has not yet been accepted as a member.