what is one reason it may be harder for one person than another to quit nicotine use?\no genetics\no peer…

Brief Explanations:

Genetics can affect how a person's body reacts to nicotine and their ability to overcome addiction. Peer - pressure, weight gain, and celebrity use are external factors, while genetics is an internal, individual - specific factor that can impact nicotine dependence and quitting difficulty.

Answer:

A. genetics