The complete fragment would look like this: The basic function of the pulmonary system that is known as respiration involves the movement of gases to and from the alveoli (option B).
<h3>What is the respiratory system?</h3>
The respiratory system is a term to refer to the set of organs possessed by vertebrates, (which include the airways and the lungs), to exchange gases with the environment.
In this process of gas exchange through the airways, the air circulates towards the lungs, and in these organs (lungs) gas exchange takes place (oxygen enters, carbon dioxide leaves).
Based on the above information, it can be inferred that the definition that best suits the pulmonary system when breathing is the movement of gases to and from the alveoli (option B).
Note: This question is incomplete because the options are missing. Here are the options in:
A. the movement of oxygen and nutrients to the body's tissues.
B. the movement of gases to and from the alveoli.
C. the circulation of blood to the outside of the alveoli.
D. the control of the rate at which the patient is breathing.
Learn more about pulmonary system in: brainly.com/question/13210870
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