Final answer:
The correct answer is B. 15 to 20 minutes. Diuresis, which is the production of urine in excess of normal levels, begins about 30 minutes after drinking a large quantity of fluid.
Step-by-step explanation:
The correct answer is B. 15 to 20 minutes. According to the information provided, diuresis, which is the production of urine in excess of normal levels, begins about 30 minutes after drinking a large quantity of fluid. Diuresis reaches a peak after about 1 hour, indicating that the person would start increasing their urine output within the first 30 minutes to 1 hour after drinking water. Therefore, 4 to 8 oz increments should be consumed for every 15 to 20 minutes of exertion to fulfill the goal of drinking a quart of water an hour during periods of work.