Final answer:
In a formal letter, there is one return between the body and the complimentary close.
Step-by-step explanation:
In a formal letter, there is typically one return (press of the enter key) between the body and the complimentary close. This return indicates the end of the main content of the letter and prepares for the conclusion. The body of the letter usually consists of multiple paragraphs, but the return before the complimentary close helps create a clear separation between the body and the closing remarks. The correct answer is A) One return.