Which question helps determine a client's alcohol consumption?

To accurately assess a client's alcohol consumption, asking about the number of alcoholic beverages consumed weekly provides direct and quantifiable information. This question allows for a clear understanding of the client's drinking habits, enabling you to gauge whether their consumption aligns with moderate drinking guidelines or indicates a potential issue.

The other options do not directly measure the quantity or frequency of alcohol intake. The second option focuses on past diagnoses rather than current consumption, while the third option looks at preference rather than consumption level. The fourth option pertains to social activities and does not provide insight into alcohol use. Therefore, inquiring about weekly consumption is the most effective way to determine a client's alcohol habits.