Couple Grammar questions

<ol>
<li>The opponents of the bill A(were few) but B. (influential enough) to prevent C.(its) D.(being passed) in the house.</li>
</ol>

<p>The answer is no error. How so? </p>

<ol>
<li>In his new book, Quest for Adventures, the A(renowned) British mountaineer Chris Bonington examines the B(past century's) most remarkable expeditions, C(profiling) such explorers D(including) Neil Armstrong, Thor Heyerdahl, and Maurice Herzog.</li>
</ol>

<p>The answer is D. Can someone explain?</p>

<ol>
<li><p>It is difficult to answer such a question. What did you consider to be incorrect?</p></li>
<li><p>The correct form is "such explorers as."</p></li>
</ol>

<ol>
<li><p>I thought the pronoun "its" was incorrect.</p></li>
<li><p>Why can't including work though?</p></li>
</ol>

<p>
[quote]
1. I thought the pronoun "its" was incorrect.

[/quote]
</p>

<p>"being" is a gerund in that sentence. Gerunds are nouns and must be modified by possessive pronouns. "its" is the possessive form of "it."</p>

<p>
[quote]
2. Why can't including work though?

[/quote]
</p>

<p>The only correct form in such a context is "such [noun] as."</p>

<p>Alright thanks for the info.</p>