When Abigail 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:.

Spontaneous recovery

Explanation:

Spontaneous recovery -

The term was first explained by Ivan Pavlov .

It is a process of learning and memory .

It refers to the process of revival of the lost or forbidden conditioned response after some time , is referred to as the spontaneous recovery .

In simple terms ,

It refers to the situation of some forgotten incident , is referred to as spontaneous recovery .

Hence , from the given scenario of the question ,

The correct answer is Spontaneous recovery .  

no , per capita income is not a true measure of the development because: -it only tells us about average income not how income is distributed among the people.it only give us an idea of the economic aspect.it is only at the qualitative basis.moreover, income is not only the way of development other factors are also as much as important as income.