Question

According to ................. theory, the resistance of body decreases with the increase in age.

• A. Immunity theory
• B. Collagen theory
• C. Both A and B
• D. None of the above

Answer 1

The correct option is A Immunity theory

The immune system theory of aging is that the rate of aging is largely controlled by the immune system. As one ages, the numbers of critical cells in the immune system decrease and become less functional, thereby the resistance of the body decreases.

Thus, the correct answer is option (A).