The correct answer is C) they were intended to support democracy.
In 2010, a similarity between US policies toward Cuba and Libya is that they were intended to support democracy.
The United States policy toward non allied countries such as Cuba and Libya in 2010, were made to make people in these countries aware of their situation and put pressure on their governments in other to change their political systems and decisions. These policies tried to create pressure from the inside, instead of the outside, to move people to do something. Yes, in 2010, a similarity between US policies toward Cuba and Libya is that they were intended to support democracy.