What is the best reason a business-like tone is important for a successful letter of complaint? a. that's what is expected in a business setting. b. legal, business language is required in a business transaction. c. your letter won't be read if it doesn't meet that requirement. d. it provides the clearest and most effective language to get positive results.

The correct answer is D. It provides the clearest and most effective language to get positive results.

Explanation:

A complaint letter is a type of formal communication and one of the instruments costumers have to complain about a product or service and get a solution from the company, store or agent that is responsible for the product or service. Because of this, it is extremely important this letters follow formal communication style and have a business tone as by including a business tone the information about the service and product the customer is clear for the recipient of the letter and besides this, avoiding informal elements such as insults or rude language and keeping the content on the aspects that deal with the product or service will have more positive results and the letter will be effective. Considering this, it can be concluded that the best reason to keep a business-like tone in a letter of complaint is that "it provides the clearest and most effective language to get positive results".

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