To analyze how the rhetorical questions in the second paragraph advance the speaker's point of view or purpose, we need to consider the effect these questions have on the audience's understanding and engagement.
Given the options, the best choice would be:
C) they develop the argument that there are few legitimate justifications for not voting.
This choice suggests that the rhetorical questions challenge the audience to reconsider their reasons for not participating in the voting process, thereby strengthening the speaker's argument around the importance of voting.