Question

1. while standing in line at the movie theater, someone coughs on tam. which of her body systems will fight the infection to which she may have been exposed?

a. digestive system
b. excretory system
c. immune system
d. respiratory system

Explanation:

The immune system is responsible for fighting infections. It identifies and neutralizes pathogens (such as bacteria, viruses) that enter the body. When a person is exposed to an infection (like through someone coughing near them, which can release infectious agents into the air), the immune system activates its cells (e.g., white blood cells like lymphocytes, macrophages) and produces antibodies (in a specific immune response) to combat the foreign invaders. The digestive system is for breaking down food, the excretory system is for removing waste (not directly for fighting infections), and the respiratory system is for gas exchange (taking in oxygen and expelling carbon dioxide).

Answer:

C. Immune System