Question

the main function of the excretory system is to ____.
pump blood throughout the body
remove blood from the body
remove waste from the body

Explanation:

• The function of pumping blood throughout the body is performed by the circulatory system (specifically the heart), so the first option is incorrect.
• The excretory system does not remove blood from the body; blood is essential and circulated, so the second option is incorrect.
• The excretory system (including organs like kidneys, lungs, skin, etc.) is responsible for eliminating metabolic wastes (like urea, carbon dioxide, excess water/salts) from the body, so the third option is correct.

Answer:

C. remove waste from the body (assuming the options are labeled A, B, C as per the three options: A. pump blood throughout the body, B. remove blood from the body, C. remove waste from the body)