The word "pinpoint" (Para. 1) basically means ______.

A．to give advice on appropriate conduct for social occasions
B．to provide ways of how to obtain information about people
C．to call the reader's attention to the negative side of people's characters
D．to discuss the various aspects of getting to know people

A．People are better described in cold, objective terms.
B．The difficulty of getting to know a person is usually underestimated.
C．One should not judge people by their appearances.
D．One is usually subjective when assessing other people's personality.