PT 62 S4 Q7

   Researcher:Over the course of three decades, we keptrecords ... ...

Which one of the following, if true, most helps to explain the researcher's findings?
(A) The small-beaked wild birds were easier to capture and measure than the large-beaked wild birds.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Complete Section: LR-B, Dec. '10 LSAT (PT 62 Sec. 4)