Which of the following is a role of water in the body?

• A. Helps transport nutrients into cells.
• B. Provides calories for energy.
• C. Directly builds muscle tissue.
• D. Prevents dehydration without fluids.

Answer: (A)

Water’s role as a carrier of nutrients is central. It acts as the body’s primary solvent, allowing vitamins, minerals, and other nutrients dissolved in it to travel through the bloodstream and reach cells where they’re needed. This delivery system supports cellular function and energy production, so the statement that water helps transport nutrients into cells is the best description of its role. Hydration supports many other processes, but water itself does not provide calories—the energy comes from carbohydrates, fats, and proteins. It also doesn’t directly build muscle tissue; muscle growth depends on adequate protein, training, and overall energy balance, with water aiding metabolic function and performance. Finally, preventing dehydration requires consuming fluids; water cannot do so “without fluids.”