How many calories are gained by drinking a glass of water?

The correct answer is (a) Zero.

Water is a calorie-free drink. It contains no carbohydrates, fat, or protein, which are the three nutrients that provide calories. A glass of water typically contains about 8 ounces, or 237 milliliters. This amount of water contains zero calories.

Some people believe that drinking water can help you lose weight. This is because water can help you feel full, which can lead to you eating fewer calories overall. However, water itself does not contain any calories that can contribute to weight gain.

If you are trying to lose weight, it is important to eat a healthy diet and exercise regularly. Drinking water can be a part of a healthy lifestyle, but it is not a magic bullet for weight loss.