When the author went back to an alumni reunion, an undergraduate student offered to help him across the street.

A．we can select our values
B．our values are inborn
C．our values are learned
D．our values change as we mature

A．we inherit our values from our parents
B．the way we are brought up determined what profession we will choose
C．what is taboo in one culture may be perfectly acceptable in another one
D．our values are determined by the culture in which we are brought up