Answer:
B) Cardiac muscle: voluntary
Step-by-step explanation:
As we know the skeletal muscle is striated and voluntary and smooth muscle is involuntary. The muscle cardiac has a different classification it is striated but involuntary. The contraction is different from the skeletal muscle this is thanks to the action potential dilivered in the muscular cells of the heart because of the sodium and calcium levels. The sodium is rises very fast but is decrease in the same way and the calcium is in a sustained level that allows the action potential.