Answer:
Sociocultural
Step-by-step explanation:
As you can see from the question above, Tom had a lonely childhood, as his parents were not present in their daily lives because of work. With this, Tom sought to get rid of this loneliness with friends, but the friends that Tom met were young people who had the habit of drinking alcohol and to be part of this group, Tom began to drink alcohol as well. This behavior accompanied Tom throughout his adult life, and it seemed that his partying and high-alcohol behavior brought more friends into his life.
From this account, we can see that Tom's alcohol addiction is directly related to a sociocultural factor that keeps Tom from drinking, believing that this will bring him friendships and prevent him from feeling alone.