Research on Asthma Suggests That

Research on asthma suggests that

A) asthma arises from an excessive, unresolved dependence on the mother and resultant fear of separation.
B) psychological factors play an important role in the initial development of hypersensitivity of air passages in asthmatic children.
C) psychological factors play an important role in triggering asthmatic attacks.
D) genetic factors do not play a role.