Question

question 9 which test is used to measure the electrical activity of the heart? a chest x - ray b mri scan c electrocardiogram (ecg) d blood test

Explanation:

A chest X - ray shows the structure of the chest, an MRI scan is for detailed internal body imaging, and a blood test checks blood components. An electrocardiogram (ECG) measures the electrical activity of the heart.

Answer:

C. Electrocardiogram (ECG)