<p>BB p622.</p>
<ol>
<li>Computers compiling statistics for scientists have supplied a deluge of information, and it has changed the way that research is conducted.</li>
</ol>
<p>(A) a deluge of information, and it has
(B) a great deal of information, and that is
(C) so much information; it is, therefore
(D) so much information that they have
(E) so much information, which they have been</p>
<p>Why is the answer D? I know the other answers can be easily eliminated because they clearly are grammatically incorrect, but isn't the "they" in D ambiguous? "They" could also refer to the scientists or computers?</p>
<p>Computers [compiling statistics for scientists] have supplied a deluge of information, and it has changed the way that research is conducted. </p>
<p>First of all, I’ve noticed a pattern after taking many practice tests: so is coupled with that. Second, they is referring back to the computers. You may confuse they with scientists; however, as shown in the brackets above, scientists is actually used to clarify which kind of computers is supplying a deluge of information. Therefore they is referring back to the computers although the pronoun may seem ambiguous.</p>
<p>benhpark is correct. You might think the “they” is ambiguous, but in in reality, it is crystal-clear and referring back to the “Computers”. The word “Computers” is obviously plural and hence “they have” is the correct usage. D is the right answer.</p>
<p>To add to what has already been said:</p>
<p>“Computers” is the noun providing information that changes research. “For scientists” describes “computers” by specifying who those computers benefit.</p>