When jane had leukemia as a child she had to undergo numerous bouts of chemotherapy, and came to associate the waiting room with nausea. now 35 years old, she took her mother to the same hospital for breast cancer treatment. once again, she became nauseous while in the waiting room. her nausea best illustrates: ?

Her nausea best illustrates "Spontaneous recovery".

Spontaneous recovery refers to a phenomenon that includes all of a sudden showing a conduct that was believed to be terminated. This can apply to reactions that have been shaped through both established and operant molding. Spontaneous recovery can be characterized as the return of the adapted reaction after a rest period or time of diminished reaction. In the event that the adapted boost and unconditioned stimulus are never again related, termination will happen quickly after a spontaneous recovery.