Based on the information presented in this selection, a child can best be helped to overcome a fear of riding an escalator by ______.
A.
talking with an adult about why riding an escalator is frightening
B.
watching an adult ride an escalator, being encouraged to try it, and being praised if he or she does
C.
being allowed to avoid escalators until the fear has diminished naturally
D.
watching an adult ride an escalator and receiving verbal assurances from the adult that it is safe