Topic sentences are an important element of

A) well-written paragraphs.
B) letters to clients.
C) reminder e-mails.
D) None of these choices is correct.

Topic Sentences

Sentences that express the main idea of a paragraph, aiming to organize and clarify the information presented.

Letters

Written communications between people or organizations.

E-Mails

Electronic messages sent over the internet, used for communication between individuals or groups.