题目解析:
D 根据 domesticated animals 定位到这一段最后两句话: The newly domesticated animals behaved better, were easier to control, and may have enjoyed a higher birth rate, which in turn yielded greater milk supplies. We know from rock paintings deep in the Sahara that the herders were soon selecting breeding animals to produce offspring with different horn shapes and hide colors. A 选项的 controlled more easily 和对应原文的 easier to control 对应,不选;B 选项的 a larger number of offspring 和原文的 a higher birth rate 对应,不选;C 选项的 more milk 和原文的 greater milk supplies 对应,不选;D 选项的 larger in size 和原文倒数第四句话的 offspring soon diminish in size 相反,所以错误,选 D。