求教 LSAT-1-4-24

24. Just as a bicycle chain may be too tight, so may one’s carefulness and conscientiousness be so tense as to hinder the running of one’s mind.

Which one of the following ,if true.would most seriously weaken the argument?

(A) Bicycle chains are used to turn wheels, but the human mind is used to "turn" ideas.

(B) People and bicycles are similar only in that both may not function well under stress.

(C) Bicycles help people with transportation, but careful, conscientious thought helps to solve many different problems.

(D) Extreme tension helps a bicycle chain to function efficiently.

(E) People engage in poor reasoning whether they are careful and conscientious or not.

正确选项：D

我的思路：A，C选项无关，很快排除，Dweaken的最明显，所以选它，但是B，E两项究竟错在何处了呢？不解，请指点为盼