What benefits do antioxidants provide?

The correct choice highlights the crucial role antioxidants play in combating oxidative stress and protecting cells from damage caused by free radicals. These free radicals can lead to cellular damage that contributes to the aging process, certain types of cancers, and heart disease. Antioxidants help neutralize these unwanted molecules, thereby reducing the risk of these health conditions and potentially promoting longevity and better overall health.

The other options, while they indicate benefits associated with various nutrients and health practices, do not specifically relate to the primary functions and benefits of antioxidants. For instance, digestion and nutrient absorption are more closely linked to dietary fibers and other vitamins and minerals rather than antioxidants specifically. Similarly, regulating blood pressure and cholesterol levels involves the influence of dietary fats and overall nutritional balance rather than just the action of antioxidants. Lastly, while antioxidants can have positive effects on skin health, enhancing skin elasticity and hydration is not their primary or defining function.