Final answer:
Tocopherols and tocotrienols are both groups included under Vitamin E, known for their antioxidant properties. The correct answer to the question is (b) Tocopherols (tocols), tocotrienols (trienols).
Step-by-step explanation:
The compounds tocopherols and tocotrienols both fall under the category of Vitamin E, which is a group of fat-soluble vitamins that include these two subgroups. Vitamin E is known for its antioxidant properties, functioning to prevent oxidative stress by scavenging free radicals. This is fundamentally important for protecting cell membranes, preventing the oxidation of other vitamins like vitamin A, and aiding in the prevention of chronic diseases. Among the options provided, the correct answer is (b) Tocopherols (tocols), tocotrienols (trienols) as these are the two groups that encompass all forms of Vitamin E.