继续问第３题：）

３.the teacher of yoga said that he knows how good the yoga exercises feel and how beneficial they are to his mental and spiritual health. after all, he said, there must be something sound to any human practice that endures more than three thousand years of history.

which of the following, if true, is the strongest relevant objection to the argument the teacher makes on the basis of the time yoga has endured?

C.the teacher cites the experience of only one person, whose well-bing might be due to other causes.

D.war, which cannor on balance be called sound, has lasted the length of human history.

选Ｄ．为什么不选Ｃ呢？

C中的Only属于绝对词，不好；其实问题问的是关于yoga的时间性的，C无关

D举例驳斥原文“there must be something sound to any human practice that endures more than three thousand years of history”的观点