When parents show constant disappointment in their children, the destructive effect is that the children will______

A．The Polish people can now spend their leisure time in various ways.
B．The Polish people are fond of walking leisurely in the countryside.
C．The Polish people enjoy picking wild fruit in their leisure time.
D．The Polish people like to spend their holidays abroad.

A．They are less likely to run away.
B．It’s easier for their masters to train them.
C．They are less likely to be shy with human beings.
D．It’s easier for them to form a relationship with their masters.