The brain is something of a stimulus reduction system, a means to reduce, in order to comprehend, the nearly infinite amount of stimuli that reach the senses at any given moment.
ANSWER :(B) a means to reduce, in order to comprehend, the nearly infinite number
in order to comprehend 是插入语可以不管 The brain is something of a stimulus reduction system, (a means to reduce the nearly infinite number of stimuli that reach the senses at any given moment.) 括号中为a stimulus reduction system 同位语 大脑是什么呢,是一个刺激消减系统,刺激消减系统是什么呢,是一个减少近乎于无限量刺激的方式,这些无限量的刺激可以在任何特定的时刻被感觉到。