Adverbs are words that are used to modify or qualify the verb, adjective and sometimes another adverb. From the sentence above and from the choices given, the word that is not an adverb is the word because. Thus, the answer is letter D.
<h2><em><u>Overview. When composing an answer, defendants may assert their own claims against the plaintiff. ... "Common law compulsory counterclaims" are counterclaims that, if successful, would nullify the plaintiff's claim. If defendants do not raise these counterclaims, they cannot sue on them later in a different lawsuit.</u></em></h2>
