Which of the following have been identified as risk factors for substance abuse among veterans and military service members?
a. the stress and the anxiety of combat and deployment
b. the regional availability of indigenous drugs like cannabis (hashish, marijuana) and opiates (opium, heroin)
c. social norms that support a heavy-drinking culture within branches of the military
d. zero-tolerance policies

A, B, and C

Explanation:

According to my research on substance abuse, I can say that based on the information provided within the question out of all the answers provided we can say that A, B, and C are all risk factors for substance abuse among veterans and military service members. These are factors that encourage and allow service members to start using and abusing a certain drug.

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answer; eurasia;