What does the signature line in a letter typically include?

The signature line in a letter is an essential component because it indicates who has authored the document. Typically, it includes the sender's name and may also contain additional contact information, such as a phone number or email address. This ensures that the recipient knows who sent the letter and how to get in touch with them if needed. Including contact information adds a professional touch and facilitates further communication, making it easier for the recipient to respond or reach out if necessary.

Other options do not align with the functional purpose of a signature line. A favorite quote is more personal and typically wouldn't be appropriate in formal correspondence. The recipient's address is usually found at the top of the letter, not the signature line, and a summary of the letter's content generally appears in the body rather than in the closing area.