An explanation of significance must follow integrated support.
I am drawing a pentagon for this question.
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A - <span>he man who delivers our mail was late today. </span>
The correct answer is <span>D) which had undergone a complete make-over</span>.
An adjective clause is, basically, an expanded adjective. It provides a description of the subject or object of the main clause. For example, this adjective clause could easily be replaced with a simple adjective. It is a clause, and not a phrase, because it has a predicate ("had undergone"). It is a dependent clause because it can't stand on its own, unlike the main clause.
