Grammar question!

Test Preparation SAT Preparation
1

<p>([A]Quick to) (**take advantage) of Melanie Johnson's ([C]preoccupation in) the history of the Johnson family, the genealogist proposed investigating ([D]that history)--for a large fee. ([E] no error). from "The Official SAT STUDY GUIDE" blue book page 417.</p>

<p>which one is correct?? plz explain, thanks</p>

2

<p>C, idiom error I believe. Should be "preoccupation with"</p>

3

<p>yep, its C
the idiom is "preoccupation with"</p>