Final answer:
A Capnograph is the correct tool for tracking both ventilation and circulation as it measures carbon dioxide levels during exhalation and assesses circulation indirectly.
Step-by-step explanation:
The monitor that tracks both ventilation and circulation is a Capnograph (C). It measures the concentration of carbon dioxide in exhaled air, indicating ventilation, and indirectly assesses circulation by showing the effectiveness of cardiac output in delivering carbon dioxide to the lungs for expiration.
An Electrocardiogram (ECG or EKG) is a tool that records the heart's electrical activity and is an essential diagnostic tool in cardiology, but it does not measure ventilation. A Pulse Oximeter measures the oxygen saturation in the blood, which indicates oxygenation but not carbon dioxide removal. A Blood Pressure Monitor measures the force of blood in the arteries and assists in assessing circulation, but does not track ventilation.