参考答案

正确答案：A
解析：文章第三段的第一句应该是该段的主要内容。Any attempt to trace the development from the noises babies make to their first spoken words…during the first few months…that from about three months they…and that by six months they…很显然，作者在这里按时间顺序说明了婴儿早期语言发音的发展过程，选项A正是对文章内容的最恰当的归纳。