Quick Grammar Question Error ID

<p>Error ID</p>

<ol>
<li>Most people were staying in town during the storm, refusing ‘to evacuate from’ their homes, ‘even though’ emergency workers ‘had extended’ numerous offers ‘for’ assistance. </li>
</ol>

<p>A. to evacuate from
B. even though
C. Had extended
D. For
E. No Error</p>

<p>I personally guessed ‘to evacuate from’ because from is unnecessary. Now that I reflect back, that was a bad choice. However, I don’t understand the correct answer. </p>

<p>Thanks in advance!</p>

<p>Idiom: “offers of” assistance is correct.</p>