Final answer:
The correct answer is C) Pulse Oximetry, which is used to noninvasively measure the oxygen saturation of hemoglobin in the bloodstream.
Step-by-step explanation:
The noninvasive method used to monitor the percentage of hemoglobin carrying oxygen throughout the tissues is C) Pulse Oximetry. This technology non-invasively measures the oxygen saturation of hemoglobin in the blood. An oximeter is usually clipped onto the fingertip or earlobe and uses light to estimate how much oxygen is being carried by the hemoglobin in the blood vessels. It provides a real-time reading and is often used in hospitals, clinics, and at home for patients requiring oxygen therapy monitoring.
Magnetic Resonance Imaging (MRI), Computed Tomography (CT) Scan, and Electrocardiogram (ECG or EKG) are also noninvasive medical imaging techniques, but they serve different purposes. MRI uses magnetic fields and radio waves to create detailed images of organs and tissues, CT scans use X-rays to create cross-sectional images of the body, and ECG records the electrical activity of the heart.