Which of the following contributes to hydration?

Hydration is essential for maintaining bodily functions, and both plain water and fruits and vegetables play significant roles in achieving optimal hydration levels. Plain water is the most straightforward source of hydration, as it provides a direct influx of fluid without additional calories or substances that might affect hydration negatively.

Fruits and vegetables, on the other hand, are also excellent contributors to hydration because they contain high water content. For example, watermelon, cucumbers, and oranges have substantial percentages of water in their composition. Consuming these foods not only adds to our fluid intake but also provides vitamins, minerals, and fiber, enhancing overall health.

Combining plain water with hydrating foods maximizes fluid intake and can make hydration more enjoyable and varied. This combination is important in diets, especially during hotter temperatures or when engaging in physical activities when fluid loss is greater.

In contrast, while some caffeinated beverages can contribute to hydration, their diuretic effect may counteract fluid retention; therefore, they are generally less reliable sources for hydration compared to plain water and water-rich foods. This makes the correct option a comprehensive choice that accurately reflects the best sources of hydration.