题型分类：推论题

题干分析：定位词compared with simple foragers, sedentary foragers；题干进行比较，问与简单采集食物的游牧民相比，安定生活的游牧民如何如何。观察四个选项较短，我们可以从选项入手，结合原文信息逐一进行排除。

选项分析：

A选项stopped breast-feeding earlier，对应第三段第三句 Cereals, which are easy to digest, would have supplemented and then replaced mother's milk as the primary food for older infants. 可以推出他们用cereals代替母乳喂养大些的婴儿，而不再长期哺育。

B选项说had lower levels of body fat，而第三段第二句说A diet higher in wild cereals produces proportionally more body fat，因此该选项与原文描述不符。

C选项说ate a limited variety of wild cereals，而第三段第二句说 A diet higher in wild cereals produces proportionally more body fat, leading to higher fertility among women. 因此该选项与原文描述不符。

D选项说had less access to easily digested foods，而第三段第三句说Cereals, which are easy to digest，因此该选项与原文描述不符。