Multiple choice Which of the following is not a function of water in the diet? To control body temperature. To keep the lining of the digestive system healthy and moist To help sight in dim light. To remove waste from the body. Reveal answer Fill a bubble to check yourself C Correct answer Explanation Water is essential for regulating body temperature, keeping tissues moist, and flushing out waste. Helping sight in dim light is a specific function of Vitamin A, not water.