There are several ways that a person can become the candidate that their political party will run in the next presidential election. please match the word with its correct definition below:
a. an election in which only the declared members of a party are allowed to vote for that party's nominees
b. a meeting of political party members to conduct party business
c. an election in which voters choose candidates to represent each party in a general election
d. an election in which voters need not declare their party preference