Question

question 13
what does oxygen saturation measure?
how well oxygen is transported to body parts
the amount of oxygen in the air
how fast a person is breathing
the size of the lungs

Explanation:

Oxygen saturation, often measured by a pulse oximeter, assesses the percentage of hemoglobin that is bound to oxygen in the blood. This indicates how well oxygen is being transported to body tissues. The amount of oxygen in the air is related to environmental factors (like altitude) and is not what oxygen - saturation measures. Respiratory rate (how fast a person is breathing) is a different vital sign. Lung size is a physical characteristic and not directly measured by oxygen saturation.

Answer:

How well oxygen is transported to body parts