What is the primary role of antioxidants?

The primary role of antioxidants is to protect cell components from damage. Antioxidants are molecules that can neutralize free radicals, which are unstable atoms that can cause oxidative stress. Oxidative stress can lead to cellular damage, contributing to various diseases and aging. By neutralizing these free radicals, antioxidants help maintain the integrity of cells, preventing damage to DNA, proteins, and lipids.

While other options mention important biological processes, they do not capture the essential function of antioxidants. For example, energy supply to cells is primarily the role of carbohydrates and fats, while digestion involves enzymes and digestive processes rather than antioxidants. Similarly, enhancing digestion and assisting in protein synthesis relate to other biochemical functions rather than the specific protective role of antioxidants. Thus, the function of protecting cells from oxidative damage is what makes the correct answer stand out.