Nelly's friends try to convince her to do cocaine. Although she is tempted, Nelly resists since she knows the consequences of her actions would be harmful to her body. In the context of Freud's structures of personality, Nelly's decision not to take cocaine is most likely dictated by her:

Ego

Explanation:

Ego can be defined or seen as a person sense of self-esteem in which the person

have the feeling of their own importance and ability as well as the sense of their own worth.

Therefore a person ego is simply the person conscious mind which is part of the person identity.

A person with EGO would often avoid or run away from something that may harm or cause them harm because they are often conscious of them self especially in a case or situation in which they know that the consequences of their actions would be harmful to them or cause them harm than good.

According to the scenario In the context of Freud's structures of personality, Nelly's decision not to take cocaine is most likely dictated by her EGO