Final answer:
Approach an intoxicated co-intern with care and observe their behavior. If necessary, discuss privately and involve a supervisor or HR if safety or work quality is at risk.
Step-by-step explanation:
When encountering a situation where a co-intern turns up to work possibly intoxicated, it is important to consider the health and safety of everyone in the workplace. First, approach the situation with sensitivity and care; it's essential not to jump to conclusions about your colleague's state. Observe the behavior and if it becomes clear that they are indeed under the influence, it might be necessary to speak to them privately and express concern. If the situation does not improve, or if it poses a risk to safety or work quality, it may be necessary to involve a supervisor or HR. Remember, while being supportive, you must also maintain professionalism in the workplace, and enabling or ignoring such behavior can have negative consequences for everyone involved.