Party labels provide useful information for performance voting, so voters can easily .
a. vote for the in-party when the voter thinks the government is doing well and vote for the out-party when the voter thinks the government is doing badly.
b. vote based solely on the performance of the voter's retirement account or other investment
c. vote in a national election based upon how the voter's municipal officials are performingd. vote at every available election opportunity

a. vote for the in-party when the voter thinks the government is doing well and vote for the out-party when the voter thinks the government is doing badly.

Explanation:

Party labels provide important in formation about political parties to the voters. It is a characterization of the central aims and objectives of a political party.Party labels help in distinguishing the political position of political parties with one another. It is a tool of identifying political parties and their agendas.It helps voters to easily vote for the parties they think is performing well or vote against the parties they think is performing badly.

The correct answer is "bantu".