Final answer:
Aaron should motivate his supervisor to take action in the closing of his persuasive request message.
Step-by-step explanation:
In the closing of his message, Aaron should b. motivate his supervisor to take action. This is an important step in a persuasive request because it encourages the supervisor to act on the request. Aaron can use language that highlights the benefits and positive outcomes that would result from his request being fulfilled. By motivating his supervisor, Aaron increases the chances of his request being considered and potentially approved.