Question

forms the second line of defense of the body against pathogens.

• A. Mucus
• B. Tears
• C. WBCs

Answer 1

The correct option is C WBCs

WBCs act as the second level of defense in human body. Skin, tears and mucus form the first line of defense of the body against microbial invasion. The wounds and cuts in the skin may cause infection. Germs may still enter the body by overcoming the first line of defense. In such situations, the second level of defense (various types of WBCs) is used by the body to destroy the germs.