Critical Reasoning

navdeepbajwa wrote:Hi Staurt

Why B is not the answer and E is as B also says there is another cause for lower reading scores

kaplan explanation says (B)and (D) point to overcrowding without declining skills how this is true since lower reading scores also means declining skills

(B), like (D), shows that overcrowding doesn't always lead to lower reading scores, but as my above post discusses, this is not actually a weakener, because it only argues that overcrowding may be insufficient to cause lower reading scores. Only (E) presents evidence that, in fact, reading scores may be low without overcrowding, and thus overcrowding is not a necessary condition, thus refuting the Causation.