Question

What does it mean to say voters do not believe they have political efficacy?

Answer 1

When voters do not believe they have political efficacy, it generally means that "A. Voters believe their votes will have no impact in an election", since this impacts their ability to change government and governmental policies. 

Answer 2

The correct answer is:

A. Voters believe their votes will have no impact in an election.

Political efficacy refers to the sense of how effective someone´s vote will actually have an influence on the political process.  It´s the position a voter can have about how much his vote really matters. A high sense of political efficacy could lead us to conclude that our vote will definitely make a difference.  On the other side, a low sense of political efficacy would make us think there´s not enough power in that vote.