Question

1. what is the primary purpose of a national convention?

to discuss foreign policy issues
to set party fundraising goals
to nominate a partys candidates for president and vice president
to elect party committee members

Explanation:

National political party conventions in systems like the U.S. have several secondary functions, but their core, defining purpose is to officially select the party's presidential and vice-presidential candidates to represent the party in the general election. Other options are either secondary activities or handled by other party bodies.

Answer:

To nominate a party's candidates for president and vice president.