<p dir="ltr"><span><span>The sentence in this question is a second conditional. </span></span></p><p dir="ltr"><span><span>The </span></span>second <span><span>conditional talk about unreal or hypothetical situations in the present or future.</span></span></p><p>The second conditional:<br></p><div dir="ltr" align="left"><table class="classic-table"><colgroup><col></colgroup><tbody><tr style=""><td><p dir="ltr"><span><span>If + S + simple past, S + would/ could/ should/ might + the basic form of a verb. </span></span></p></td></tr></tbody></table></div><p dir="ltr"><span><span> </span></span></p><p dir="ltr"><span><span>Therefore, the verb in the main clause should follow the pattern “would/ could/ should/ might + the basic form of a verb.” Choice (B) "</span><span>would save"</span><span> is the correct answer. </span></span></p><p>“It is likely that…” is added at the beginning of the main clause to indicate a slight chance that the result mentioned in the main clause might happen. </p>