第二遍做又错了...=.=新prep177请教！

regansun

In her 26 years in the forests of Gombe, Jane Goodall collected data that proved that chimpanzees exhibit the kind of curiosity so that new patterns of behavior and expression can be passed on from each one to others by imitating and practicing

A. exhibit the kind of curiosity so that new patterns of behavior and expression can be passed on from each one to others by imitating and practicing

B. will exhibit the kind of curiosity so that new patterns of behavior and expression can be passed on from one to another by imitating and practicing

C. will exhibit the kind of curiosity so that new patterns of behavior and expression can be passed on from one to another by imitation and practice

D. exhibit the kind of curiosity by which new patterns of behavior and expression can be passed on from one to another by imitation and practice

E. exhibit the kind of curiosity where new patterns of behavior and expression are passed on to others by imitation and practice

错选了B 看了解释后明白“so that” “will” 等错误的用法

但正确答案的D选项怎么都看不太舒服啊， 到底by which 是指代什么呢？有NN能帮忙还原一下句子么？