She watched the Olympics and she could learn how to play and then try it.
<span>The best answer is :
Systolic circulation
</span>The systolic blood circulation is the process when the heart contracts., the oxygen-rich blood from the heart is pumped out into the arteries, from where it is sent to all the body parts.
<span>The node which initiates the contraction through a nerve signal is called the AV node.</span>
Ur answer is d bc that’s makes it uncertain and difficult to accomplish
