Final answer:
Selenium is the mineral that functions as an antioxidant and has been suggested to reduce cancer risk. It protects against tissue and membrane peroxidation and is globally recognized for its antioxidant properties.
Step-by-step explanation:
A mineral that has antioxidant functions and has been suggested to reduce cancer risk is b. selenium. Selenium acts as an antioxidant, providing protection against peroxidation in tissues and membranes. It is involved in the biosynthesis of coenzyme Q, which is a part of the respiratory chain. In contrast to other minerals that may have other roles in the body, such as sulfur in glucosinolates or manganese as a cofactor for enzymes, selenium is well-recognized for its antioxidant properties globally across the body and in synergy with Vitamin E.
Antioxidants are important because they help block the action of initiators or promoters of cancer. These substances may damage DNA by oxidation, therefore, antioxidants like Vitamin A, C, E, beta-carotene, and selenium can potentially reduce the risk of cancer by preventing this type of cellular damage. While studies have shown mixed results concerning the effectiveness of antioxidants through supplementation, a diet rich in fruits and vegetables, which are natural sources of antioxidants, has been consistently associated with a lower risk of developing certain cancers.