<p>Guys I have another question, this time about the writing section...</p>
<p>It's #28 on page 417</p>
<p>Quick to take advantage of Melanie Johnson's preoccupation in the
.......A.................B..............................................C.........................
history of the Johnson family, the genealogist proposed investigating that history -
..............................................................................................D...................
for a large fee. No error.
........................E..........</p>
<p>The answer in the book is C...how?
Diction? Idiom?</p>
<p>I thought the answer was D, think "that" should be "which"
Why is that not correct?</p>