Question

multiple choice question
the ________ system is responsible for the transport of blood in the body.
o pulmonary
o respiratory
o circulatory
o endocrine

Explanation:

The circulatory system, which includes the heart and blood - vessels, is responsible for transporting blood throughout the body. The pulmonary system is related to the lungs and gas - exchange in the context of the circulatory system. The respiratory system deals with breathing and gas exchange between the body and the environment. The endocrine system is involved in hormone production and regulation.

Answer:

C. circulatory