Answer: Heredity
Step-by-step explanation:
The factor which can be responsible for negatively affecting Owen towards tobacco addiction is hereditary.
Rest all the factors are going to effect Owen because the family is not taking any kind of tobacco, the peers are not taking any kind of tobacco and his role model is also a healthy person inspiring for healthy lifestyle.
The only reason which can affect Owen is his hereditary. This can be one of the reasons that Owen can shift towards tobacco.
hence, the correct answer is option C