Question

the nervous system is responsible for (1 point)
exchanging gases between the body and the environment.
receiving and processing stimuli from the body.
defending against disease like the flu or common cold.
breaking down food and extracting nutrients.

Explanation:

The nervous system's core function is to detect external and internal stimuli, process that information, and generate responses. Exchanging gases is the respiratory system's role, disease defense is the immune system's role, and nutrient extraction is the digestive system's role.

Answer:

receiving and processing stimuli from the body.