PT 59 S2 Q13

   Bethany: Psychologists have discovered a technique forreplacing ... ...

Which one of the following principles, if valid, most helps to justify drawing the conclusion in Bethany's argument?
(A) Psychologists should make an effort to determine why certain children are especially prone to nightmares while other children are not.
(B) ...
(C) ...
(D) ...
(E) ...

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