Curtis is undergoing systematic desensitization to overcome his fear of heights. relaxing to each step in the his fear hierarchy allows curtis to gradually undergo

a. adaptation.
b. disinhibition.
c. role reversal.
d. stimulus control.

Adaptation.

Explanation:

Adaptation may be defined as the phenomena by which the individual becomes more favorable towards its environment. The adaptation is helpful for the individual to live in the particular area.

The adaptation in psychology might help the individual to overcome from their fear. The Curtis has the fear of height but she can overcome by adapting the situations and facing more areas that are situated at the height. This hierarchy allows Curtis to undergo the adaptation.

Thus, the correct answer is option (A).

since you have not provided the options here i   am going to give you general overview about hormone.hormone are actually the part of endocrine system in our body and produced by the endocrine glands. the hormones act like a chemical messenger   within human body. once produce by the glands they   travel through the blood stream and reach at specific or target tissue and organs   which result in control of our body function. the hormones are specific in their work and work on only the targeted tissue or organ   . with the of hormone endocrine system regulate the heart rate , metabolism, our mood and   growth as well as the development and even the sleeping cycle etc. they actually are the messenger for body cell and organs .

you may having too much sleep.. a good night sleep consists of about 7 hours. more than that could be the reason you're still tired throughout the day.