What does the National Convention primarily focus on?

The National Convention primarily focuses on selecting the president of the party, as this event marks a key opportunity for party members to come together and officially nominate their candidate for the presidency. During the convention, delegates from various states cast their votes, and the majority winner becomes the party's nominee for the general election. This process is significant as it galvanizes party support, unifies various factions within the party, and establishes a public face for the campaign.

While the other options may be aspects of party activities around the time of the convention, they do not encapsulate the central function of the National Convention itself. For instance, while determining policy changes and setting the party's platform are important tasks often discussed during the convention, they serve more as background to the main event of nominating the presidential candidate. Fundraising is certainly vital to a party's election strategy, but it is not the focus of the convention; rather, it is a continuous effort leading up to the elections. The primary focus remains on the selection of the party's presidential nominee, making this choice the most accurate.