Which quantity is typically considered to be one drink?

The commonly accepted standard for "one drink" in the context of alcohol consumption typically refers to a drink that contains about 14 grams of pure alcohol. A 12-ounce beer, which generally has around 5% alcohol by volume (ABV), fits this definition well, making it a standard serving size for beer.

When comparing other options, an 8-ounce serving of wine would typically contain more alcohol than the standard drink measure; a typical serving of wine is 5 ounces. A 16-ounce beer would also exceed the typical single drink measure, while a 1-ounce serving of liquor is less than the average serving, which is usually 1.5 ounces. Therefore, the 12-ounce beer is the correct answer as it aligns with the common definition of one standard drink.