GWD6-Q19 有谁能帮忙翻译一下句子

GWD6-Q19:

One of the primary distinctions
                    between our intelligence with that of other primates may lay not so much in any specific skill but in our ability to extend knowledge gained in one context to new and different ones.

1. between our intelligence with that of other primates may lay not so much in any specific skill but
2. between our intelligence with that of other primates may lie not so much in any specific skill but instead
3. between our intelligence and that of other primates may lie not so much in any specific skill as
4. our intelligence has from that of other primates may lie not in any specific skill as
5. of our intelligence to that of other primates may lay not in any specific skill but

本来一看句子前半句，知道是做比较的 找between X and Y 选项，但是后来，发现这样选择，这道题也太简单了，然后试着理解后半句的意思，怎么也不懂它要讲什么，哪个NN能帮忙翻译一下。

答案是C

谢谢

考not so much ... as... 的用法，意思是“与其说...不如说...”

我们人类的智力与其他灵长类动物智力的一个基本区别与其说是某个特定技能的区别不如说是一种能力的区别，即把某个特定场合下获取的知识扩展应用到全新的不同场合下的能力。

我的中文表达一般，但大概就是这意思：）

NN 就是 NN !

谢谢