Write a three to five paragraph letter persuading a specific audience to take action of some kind. Think about recent situations at your place of work, an organization to which you belong, or in your daily life that present opportunities to write a persuasive letter. When responding to this question, be sure to make the audience for your letter clear in a correctly formatted greeting. Here are some questions that you might consider:

Did you buy a product or service with a warranty that a company refused to validate when something went wrong? If so, you might write a complaint letter asking for justification for the refusal, requesting that the warranty policy be changed, or requesting reimbursement for the money you overpaid due to a warranty mix up.
Did you recently have a negative experience with a company? Would a letter of complaint to the general manager, president, or chairperson help raise awareness of the situation and prevent it from happening again?
Have you recently attempted to follow an organizational or departmental policy that failed to meet your needs, answer your questions, or accurately represent a situation? If so, you might write a request letter (or memo) to someone in a decision-making position (e.g., manager, government official, department chair) requesting a specific change in the policy. Consider how a new policy or a change in an existing policy may help alleviate the problem and ultimately benefit policy users as well as decision makers.
Is there an employee in your organization who is going up for promotion or is doing exceptional work and might benefit from a letter of recognition?
Is there an employee at a company who consistently gives excellent customer service and might benefit from a letter of recognition?