Which of these drug users is most likely an addict?
phil, who smokes marijuana once or twice a week to relax after work
marjorie, who takes cocaine every day and has strong bouts of anxiety if she cannot
will, who takes insulin every day for his diabetes and cannot lead a normal life without it

The correct answer is-Marjorie, who takes cocaine every day and has strong bouts of anxiety if she cannot

Explanation:

Cocaine is a recreational which bring pleasure to the body and mind. It affects the reward pathway of the brain and due to regular use of it, people become addictive to this drug.  

Once a person become addict to this drug they take the drug regularly, therefore, drug addict person become dependent of these recreational drug and if they do not get these drugs a strong feeling of anxiety occurs in drug addict person.

So, in this case, Marjorie is most likely an drug addict because when she do not get cocaine she has a strong bout of anxiety and she takes cocaine daily which shows that she developed a cocaine dependence which force her to take cocaine daily.

d ) power this is the right answer