PT 59 S2 Q4

   Scientist: While studying centuries-old Antarctic icedeposits, ... ...

The reasoning in the scientist's argument is most vulnerable to criticism on the grounds that the argument
(A) presumes, without providing justification, that a rise in global temperatures is harmful
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Complete Section: LR-A, Dec. '09 LSAT (PT 59 Sec. 2)