Answer now. "correctly."

what is the purpose of a persuasive letter?

to demonstrate the steps in a process
to inform readers about meaningful research
to convince readers to take action or support a cause
to explain a societal problem that needs to be addressed

To convince readers to take action or support a cause

Explanation: The verb to persuade (from which the adjective persuasive comes) means to cause someone to do a specific action or believe in a certain idea through the use of reasoning, presenting logical arguments; demonstration, explanation and information may be part of the persuasive strategy, but those are not the main purpose of a persuasive letter.

yes

explanation:

hey kid learn to actually put time and effort into your school work and maybe you would get higher grades and not have to come on this website and beg for answer's