Q. Regular intake of fresh fruits and vegetables is recommended in the diet since they are a good source of antioxidants. How do antioxidants help a person maintain health and promote longevity?

• (A) They prevent excessive oxidation of carbohydrates, fats and proteins in the body and help avoid unnecessary wastage of energy
• (B) They active certain genes in the cells of the body and help delay the ageing process
• (C) They activate the enzymes necessary for vitamin synthesis in the body and help prevent vitamin deficiency
• (D) They neutralise the free radicals produced in the body during metabolism