Final answer:
Adults with no disease-related fluid restrictions should drink at least 2.7 liters (11 cups) of fluids daily for females and 3.7 liters (15.6 cups) for males.
Step-by-step explanation:
According to the Food and Nutrition Board of the Institute of Medicine (IOM), adults with no disease-related fluid restrictions should drink at least 2.7 liters (11 cups) of fluids daily for females and 3.7 liters (15.6 cups) for males. The recommended fluid intake includes water from both food and beverages. On average, an adult takes in about 2.2 liters of fluids, with approximately 20% coming from solid foods.