Answer:
a) Codependent
Step-by-step explanation:
Codependent behavior: The term codependent behavior is defined as one of the behavioral conditions in a particular relationship whereby one person tends to encounter the other person's poor mental health, irresponsibility, addiction, under-achievement, and immaturity. It can occur because one person in a particular relationship might posses addiction that affects the other person.
In the question above, Jeff is exhibiting codependent behavior.