A Study by Purcell and His Colleagues Tested the Hypothesis

A study by Purcell and his colleagues tested the hypothesis that asthmatic children would become symptom free soon after being sent away from their parents. The results of this study indicated that

A) all asthmatic children improved dramatically when they were separated from their parents.
B) the children whose symptoms had been classically conditioned improved during separation, whereas the other children did not improve.
C) the children for whom emotions were important precipitants improved during the separation, whereas the other children did not improve.
D) the children for whom emotions were important precipitants did not improve during the separation, whereas the other children did improve.