<p>The correct answer is <strong>(B) representatives</strong>.</p>
<p>In this sentence, we need a noun that can refer to the individuals who will sign the loan agreement. The verb "is expected" indicates that the signing has not yet taken place, so we need a noun that indicates future action. The word "by" tells us that the individuals are the ones who will perform the action of signing.</p>
<p>The noun "representatives" is the correct choice because it refers to individuals who act on behalf of an organization or group. In this case, the representatives will sign the loan agreement on behalf of the multilateral bank and Thailand's Finance Ministry.</p>
<p>The other options are not suitable for this sentence:</p><p><span style="font-size: 13.008px;">(A) represents: This is a verb form that indicates present tense. It does not match the future action described in the sentence.</span></p><p><span style="font-size: 13.008px;">(C) representing: This is a verb form that indicates present participle. It does not function as a noun and cannot refer to the individuals who will sign the loan agreement.</span></p><p><span style="font-size: 13.008px;">(D) represented: This is a verb form that indicates past tense. It does not match the future action described in the sentence.</span></p>