Which situation requires the use of a colon?
the closing of a personal letter
the salutation of a personal letter
the salutation of a business letter
the closing of a business letter

the salutation of a business letter

Explanation:

A colon is a type of punctuation marks. The basic function of a colon is to separate the two independent clauses which in the sentence. Also, it helps in the introduction of the items listed. A colon helps in emphasizing on the phrase or the single word which appears at the end of the sentence. In the business letter, a colon is used after the salutation.

b)and

is the answer.

its because you eat a lot of food and that can lead to many heath problems like diabetes or becoming very over weight and fat etc.

intonation based on rhythm.