The work" precept" ( lane 3, Para. 3 ) probably means" ______".

A．parents should be strict with their children
B．parental controls reflect only the needs of the parents and the values of the community
C．parental restrictions vary, and are not always enforced for the benefit of the children alone
D．parents vary in their strictness towards their children according to the situation

A．should be avoided
B．is universal among parents
C．sets up dangerous states of worry in the child
D．will make him lose interest in learning new things