Final answer:
A supervisory referral occurs when an individual seeks assistance a second time within a 1 year period after an initial voluntary referral, with alcohol consumption being a significant factor in workplace aggression.
Step-by-step explanation:
A supervisory referral occurs when an individual with a previous voluntary referral seeks assistance for a second time within a 1 year period. The correct answer to the question would be A:1.
In the context of workplace behavior related to substance abuse, it's important to address issues promptly and recommending support measures such as counseling or rehabilitation. The study by Greenberg & Barling (1999) suggests that factors like alcohol consumption can be predictors of workplace aggression, which underlines the necessity of appropriate intervention strategies including supervisory referrals to prevent potential workplace violence.