Final answer:
The part of a business letter that comes after the body is the Complimentary Close, which is a polite and professional closing line that ends with your typed name and a space for your signature.
Step-by-step explanation:
The part of a business letter that comes after the body is known as the Complimentary Close. This closing part of the letter should be brief and is typically expressed with formal language such as "Sincerely" for formal letters, or "Thank you" for slightly informal tones. In proper business letter formatting, only the first word of the closing is capitalized, followed by a comma. There should be two lines left blank before typing your name, where your signature will be placed when the letter is printed. It is important to maintain professionalism through a polite closing line and by using a professional complimentary close.