【名词&注释】
医疗卫生(medical)、医务人员(medical staff)、医疗机构(medical institutions)、牙间隙刷、行政法规(administrative regulation)、《医疗事故处理条例》(bylaws handling medical malpractice)、部门规章(divisional regulations)、自我意识发展(self-awareness development)、菌斑控制(plaque control)、个体自我意识(the self-awareness of individual)
[单选题]个体自我意识(the self-awareness of individual)发展(self-awareness development)的开始时期是( )
A. 婴儿期
B. 幼儿期
C. 学龄期
D. 青春期