I believe the correct answer is B because you obviously need to see if the person is still alive or not. I'm having second thoughts that it might be A.. I'm not sure which. Hopefully you get it right
What property makes the normal pacemaker region of the heart function as a pacemaker?
The property of the normal pacemaker region is able to provide a normal setting for the heart to beat. It allows the heart to beat at a regular rate.
700,000 infected each year in the united states
