Which of the following is not a function of a political party?
a.
to nominate candidates for public office
c.
to reach a compromise on national issues
b.
to inform political supporters
d.
to be a bonding agent for party members

Because the parties stand for different things, in terms of their preferred government policies and their ideological leanings, the party names themselves are like brand names because they offer a shorthand way of providing information to voters about the parties’ candidates.

On that note, I would say the answer is D.