The passage is mainly about______.

A．the continuity of culture is made possible mainly by formal education
B．an infant is immersed in a particular sociocultural system ever since it is born
C．both formal and informal education can help a child learn how to live effectively in a given Society
D．it is formal education that plays a major role in helping a child acquire ideals and values

A．The emphasis and content of puberty rites vary considerably.
B．Puberty rites inevitably impose the most profound and enduring influences on an individual's life.
C．Puberty rites may include circumcision and Bar Mitzvah.
D．Puberty rites may include the instruction in ethical codes.