PT 65 S1 Q12

Populations of a shrimp species at eleven different Indonesian coral reefs ... ...

Which one of the following, if true, most helps to explain the substantial genetic differences among the shrimp populations?
(A) The genetic differences between the shrimp populations are much less significant than those between shrimp and any other marine species.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Dec 2011 LSAT (PT 65): Logical Reasoning A