What is Considered One Standard Drink?

Answer: 12 oz of beer

Explanation: In the United States, one "standard" drink (or one alcoholic drink equivalent) contains roughly 14 grams of pure alcohol, which is found in: 12 ounces of regular beer, which is usually about 5% alcohol. 5 ounces of wine, which is typically about 12% alcohol. 1.5 ounces of distilled spirits, which is about 40% alcohol.

12 oz of beer is considered one standard drink. Therefore, option D is correct.