The word "handicapped" (paragraph 1, line 6) might mean______.

A．make no real efforts
B．fail to go at a job
C．show a complete lack of confidence
D．all of the above

A．A child may accept another person's underestimate of his ability.
B．A child may think that he is too stupid to make the most of his mental faculties.
C．A person may have the idea that he is incapable of doing good work.
D．Some old people believe that they are capable of learning anything new.