Final answer:
The main purpose of the closing section of a cover letter is to let the reader know how to contact you.
Step-by-step explanation:
The main purpose of the closing section of a cover letter is to let the reader know how he or she can contact you. This includes providing your contact information, such as your phone number and email address, and expressing your willingness to be available for an interview or further discussion.
Learn more about Cover letter closing section