Skenazy believes that children should be allowed to travel alone without parents at a young age. 未知类型：{'label': 'questionDesc', 'content': '请根据所给材料判断题干是否正确', 'isMemberControl': 0, 'type': 181} 未知类型：{'label': 'source', 'content': '粉笔英语独家模拟卷 六级 信息匹配Helicopter Moms vs. Free-Range Kids', 'isMemberControl': 0, 'type': 181}

以下哪个选项与材料内容相一致？ 未知类型：{'label': 'questionDesc', 'content': '请选择正确答案。', 'isMemberControl': 0, 'type': 181} 未知类型：{'label': 'source', 'content': '粉笔英语独家模拟卷 六级 信息匹配 Helicopter Moms vs. Free-Range Kids', 'isMemberControl': 0, 'type': 181} A: The timing and method of allowing kids to have more freedom are not fixed. B: Skenazy started her own blog to express her opinion that kids should be more independent and promote sensible parenting. C: Parents suffered a higher level of anxiety about their children's safety partly because of media exposure of crime. D: The overprotection of kids can come at a cost to both children and parents.