Which organ a child develop immunity?
a. the thyroid
b. the thymus
c. the pancreas
d. the ovaries

The correct answer is B. the thymus

In immune system, thymus is one of the primary lymphoid organs which provide the site for the maturation of T-lymphocytes or T-cells.

T-cells helps in development of adaptive immunity.

They undergo "positive selection" and "negative selection" in thymus to mature into functional T-lymphocytes.

Absence of thymus or decreased function of thymus due to mutation can result in severe immunodeficiency and thus makes the person susceptible to the infection.

The correct answer is B. the thymus

In immune system, thymus is one of the primary lymphoid organs which provide the site for the maturation of T-lymphocytes or T-cells.

T-cells helps in development of adaptive immunity.

They undergo "positive selection" and "negative selection" in thymus to mature into functional T-lymphocytes.

Absence of thymus or decreased function of thymus due to mutation can result in severe immunodeficiency and thus makes the person susceptible to the infection.

B. the thymus

Explanation:

B. the thymus

Explanation:

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%

its temperature is increasing. this causes molecular vibrations to increase.