<em>When punctuating direct quotations, use a</em><em> A. comma</em><em> after the verb that introduces the quotation.</em>
Explanation:
Quotation marks are used to mark the beginning and the end of a direct quotation. Whenever this quoted material in interrupting or introduced in a text, a comma should be used to separate the quotation from the text -or verb that introduces the quotation. For example:
<em>He said</em><em>,</em><em> "I don't believe you."</em>