<p>Mr. Paolo appointed Mr. Butler to be in <u>charge</u> of maintaining a supply of paper in the fax machine.</p><div><span style="font-size: 13.008px;">The correct answer is (B) charge. </span></div><div><span style="font-size: 13.008px;"><br></span></div><div><span style="font-size: 13.008px;">The phrase "to be in charge of" means to be responsible for or to have control over something. In this case, Mr. Butler is being appointed by Mr. Paolo to be responsible for maintaining a supply of paper in the fax machine.</span></div><div><span style="font-size: 13.008px;"><br></span></div><div><span style="font-size: 13.008px;">(A) "exchange" does not fit in the sentence as it does not convey the meaning of responsibility or control.</span></div><div><span style="font-size: 13.008px;">(C) "excess" does not fit in the sentence as it means more than what is needed or required, which does not make sense in the context of maintaining a supply of paper. </span></div><div><span style="font-size: 13.008px;">(D) "need" does not fit in the sentence as it is the opposite of being responsible for maintaining a supply.</span><br></div>