Final answer:
The correct way to write a salutation in a business letter is by addressing the recipient with "Dear" followed by their name and a colon.
Step-by-step explanation:
When writing a salutation in a business letter, the correct way is by addressing the recipient with "Dear" followed by their name and a colon. For example, if you know the recipient's name is John Doe, you should write "Dear Mr. Doe:"
If you don't know the name of the recipient, or if you don't know their gender, you can use the salutation "To Whom It May Concern:"
It is important to remember to leave one blank line after the salutation before continuing with the body of the letter.