Select the most appropriate option. When writing a formal letter, what salutation do we use if we do not know the recipient's name?

Correct option is B

The correct option is (b) Dear Sir / Dear Madam.

Explanation:
In formal letter writing, when the name of the recipient is not known, the standard salutation used is Dear Sir or Dear Madam. This is the universally accepted and professionally appropriate greeting in official correspondence.

Formal Letter Writing Rule:

• When the recipient's name is known: Dear Mr. [Surname] / Dear Ms. [Surname]
• When the recipient's name is NOT known: Dear Sir / Dear Madam

• (a) Dear Mr. / Dear Mrs. – These salutations require the recipient's surname to follow. Without a name, they are incomplete and inappropriate.
• (c) Greetings Sir / Greetings Madam – This is not a standard salutation used in formal letter writing.
• (d) Hello Sir / Hello Madam – This is informal and not appropriate for formal correspondence.