Answer: c. adding green tea to a healthy diet, physical activity, and healthy lifestyle
Explanation:
The green tea consists of caffeine and flavonoid named as catechin. The catechin is an antioxidant. The catechin helps to break down the excess fat, whereas the caffeine and catechin both will help to increase the amount of energy that a body uses for the metabolism.
The ingredients alone are not responsible for the effects of the green tea instead a diet supplemented by high nutrition, daily exercise and healthy lifestyle all are necessary for the action of green tea on the body.