The theories used to explain "why people need to belong" include the following, EXCEPT: ( )

参考解析：

A项定位至倒数第二段，但文章中只是用山羊和绵羊举了个例子；B项定位第三段开头“Survival for the fittest” is probably another answer you will hear when you ask “why do I have to fit in?”适者生存”可能是另一个你会听到的回答，当你问“为什么我必须适应。也就是说社会的发展必要会淘汰落后的事物；C项定位最后一段In social psychology, this questions answerable by the concept of information social influence.在社会心理学中，这个问题可以通过信息社会影响的概念来回答；D项定位第四段第二句The "belongingness hypothesis tates" that people have a basic psychological need to feel closely connected to others. 归属感假说认为，“人们有一种基本的心理需要，感觉自己与他人紧密相连。故本题正确答案选A。