题目选项分析

Sasha: It must be healthy to follow a diet high in animal proteins and fats. Human beings undoubtedly evolved to thrive on such a diet, since our prehistoric ancestors ate large amounts of meat.

Jamal: But our ancestors also exerted themselves intensely in order to obtain this food, whereas most human beings today are much less physically active.

Jamal responds to Sasha by doing which of the following?

【选项】Bringing forth a piece of information for the purpose of suggesting that she should qualify her main conclusion