We can infer from the passage that the writer's attitude toward shyness is ______.

A．shyness helps us to live up to our full potential.
B．Shyness enables us to understand ourselves better.
C．Shyness blocks our chances for a rich life.
D．Shyness has nothing to do with lack of self-esteem.

A．harmful to people
B．a weak point of shy people
C．the cause of unhappiness
D．a good quality