What are protective food substances required by the body?

The correct choice highlights the importance of vitamins as protective food substances required by the body. Vitamins are organic compounds that play crucial roles in various bodily functions, including metabolic processes and the maintenance of overall health. They act as antioxidants that protect the body from the harmful effects of free radicals, support the immune system, and assist in processes such as skin health, energy production, and the regulation of various bodily systems.

In contrast to carbohydrates, which primarily provide energy; proteins, which are essential for building and repairing tissues; and minerals, which are necessary for a range of functions including bone health and fluid balance, vitamins specifically focus on protective roles. This unique function of vitamins, particularly in preventing diseases and maintaining health, underscores their classification as protective substances in the diet.