Final answer:
The most appropriate speech purpose at a political rally is to persuade the audience to vote for the candidate, as the goal is to bolster support and encourage voter turnout.
Step-by-step explanation:
At a rally for supporters of a particular political candidate, the specific speech purpose of a persuasive speech that would be most appropriate is to persuade the audience to vote for the candidate. Persuasive speech seeks to convince or influence the audience's beliefs, behaviors, or attitudes, and can often overlap with other speech purposes such as informing or evoking emotions. The goal is to bolster support for the candidate and encourage voter turnout, which aligns closely with the strategic efforts of a campaign to engage and mobilize acknowledged supporters.The specific speech purpose of a persuasive speech that would be most appropriate at a rally for supporters of a particular political candidate is option 2) To persuade the audience to vote for the candidate. A persuasive speech aims to convince the audience to adopt a certain viewpoint, belief, or behavior. In the context of a political rally, the speaker would likely present arguments and evidence to persuade the supporters to vote for the candidate they are rallying for.