Question

Which sentence has correct punctuation?

a; We need wireless boosters for: the kitchen, the basement, and my bedroom.

b; We need wireless boosters for three rooms: the kitchen, the basement, and my bedroom.

c; We need to put wireless boosters into: the kitchen, the basement, and my bedroom.

d; We need wireless boosters in: the kitchen, basement, and my bedroom.

Answer 1

B. We need wireless boosters for three rooms: the kitchen, the basement, and my bedroom.

Answer 2

Answer: b. We need wireless boosters for three rooms: the kitchen, the basement, and my bedroom.

Explanation: The use of colon is very simple, it introduce an enumeration or a list of items in a sentence, a colon can be substituted by the words "which are" or "as follows". A colon must never be used to separate a verb from its complements and also is incorrect to use them to separate a preposition from its object (like the options a, c and d in which the colon is after the prepositions for, into and in respectively). So the correct answer is option b.