Final answer:
The appropriate response to a customer drinking alcohol too quickly is to offer water, suggest slowing down, or propose a break from drinking. Ignoring the situation is not recommended and could lead to serious consequences.
Step-by-step explanation:
If you notice that one of your customers is drinking alcohol too quickly, the appropriate actions to take include offering them water or a non-alcoholic beverage, encouraging them to slow down their drinking, and suggesting they take a break from drinking. However, one should never ignore the situation and let them continue as this could lead to harmful consequences such as alcohol poisoning or impairment that could cause injury to themselves or others.