Final answer:
The provider's name and address at the top of formal business stationery is called a letterhead, which is a part of the formal structure of a business letter that also includes the salutation and closing. The correct option is A.
Step-by-step explanation:
The provider's name and address that are printed at the top of formal business stationery is called a letterhead. A letterhead typically includes the company's name, logo, address, and contact information. It serves as an official representation of the company in correspondence.
When composing a business letter, following the formal structure is crucial. This includes the sender's address, the date, the recipient's address, a salutation, the body of the letter, and a closing with the sender's signature and typed name.
For additional items included with the letter, such as a resume, are listed under the term 'Enclosures' after the signature and typed name.