Single-interest groups try to affect elections based on a. which party is in power at the time. b. each candidate's stand, in regard to the groups' interests. c. the candidate's party affiliation. d. the broad views of all the candidates.

A single-interest group is a group that is trying to push forward legislation and momentum around, well, a single-issue.

This might mean gun-control or reproductive rights.

They might have candidates in one party that they prefer but they are broadly trying to convince ALL candidates to believe what they believe.

So, B is the correct answer.