Correct Response: B. A business correspondence sent to confirm that a communication has been received is an example of a formal acknowledgement letter. The acknowledgement letter informs the sender that his or her letter has been received and read. A confirmation letter (A) is a correspondence sent to approve details, summarize an agreement, or respond to an invitation. Correspondence used to ask a question or prompt a response is a letter of inquiry (C). A letter sent in response to a claim or complaint that can be either positive or negative is an adjustment letter (D).
