参考答案

正确答案：C
解析：该题问“为什么很多广告者要为孩子作为广告目标辩护?”文中谈到广告者认为大家低估了孩子对媒体的意识能力，说"... most children can recognize an advertisement and know that its purpose is to sell something and are able to make judgments about the products shown in advertisements."。因此，[C]“孩子能理解广告的意图”是正确答案。