Which punctuation change will correct this sentence?

After listening to the concert, Liane had one response: magnificent.

(A) No changes are needed.

(B) Magnificent should be written, "Magnificent!"

(C) Magnificent should be written, "Magnificent"!

(D) Change the colon to a semicolon.

The answer is: (B) Magnificent should be written, "Magnificent!"

When citing what someone else has said, quotation marks are used. In this case, the expression takes an exclamation mark, which should be placed within the quotation marks.

The rest of the options are incorrect because it is proper to introduce quotation marks when citing, in choice C the exclamation mark is outside the quotation marks, and the use of semicolon is unnecessary to introduce a quotation.