Which of the following actions may indicate a person is a problem drinker?

Consuming alcohol to cope with stress is a significant indicator that a person may be a problem drinker. This behavior suggests that the individual is using alcohol as a means to manage negative emotions or life's challenges, rather than enjoying it socially or responsibly. When someone relies on alcohol to alleviate stress, it can lead to a pattern of dependency and increased consumption, which is a hallmark of problematic drinking behavior.

In contrast, actions such as limiting drinking to weekends or drinking only in social settings typically demonstrate more controlled or moderate drinking habits. Additionally, choosing non-alcoholic drinks at gatherings reflects a lifestyle choice that avoids alcohol entirely, showing an absence of problem drinking behavior. These alternative actions are generally seen as healthier approaches to alcohol consumption. Hence, the focus on drinking as a coping mechanism distinctly sets apart option C as an indicator of problem drinking.