Which of the following is considered one serving of alcohol?

One serving of alcohol is defined as containing approximately 14 grams (or 0.6 ounces) of pure alcohol. This is typically found in various beverages:

1. Beer is generally considered to have about 5% alcohol by volume (ABV), so a standard serving is usually around 12 ounces. Sixteen ounces of beer exceeds this standard serving size.

2. Non-fortified wine typically contains around 12% ABV. A standard serving is usually around 5 ounces, making 8 ounces more than one serving.

3. Liquor or distilled spirits, such as whiskey or vodka, at 80-proof (which is 40% ABV) is usually recognized as one serving when it is served at 1.5 ounces. This matches the definition of a standard serving perfectly, making it the correct answer.

4. Mixed drinks can vary significantly in alcohol content depending on the recipe. A 6-ounce mixed drink, especially if it includes liquor at 40-proof, is not standardized and can contain more than a single serving of alcohol depending on the proportions used.

Thus, the 1.5 ounces of liquor at 80-proof represents one standard serving of alcohol accurately, aligning with widely recognized guidelines.