pick from the following. [I] immune. [II] digestive. [III] vascular. [IV] respiratory.
Given those answer options, answer the question: Answer the following question given this paragraph: The respiratory system is the body system that exchanges gases with the outside air. It brings air containing oxygen into the body for the cells. It also releases carbon dioxide from the cells into the air. This exchange of gases is called respiration. Q: Which system in the body exchanges gases with the outside air? A:
A:
[IV]