What do you need to keep the cardiovascular system healthy?

You need to keep it healthy because the cardiovascular system keeps the blood pumping through your body and keeps your heart functioning.

Stay physically active to reduce blood pressure, lower bad LDL cholesterol and strengthen your heart muscle and blood vessels, which results in improved blood flow.

Eat a heart-healthy diet. Consume a diet based on fruits, vegetables, nuts, whole grains, fish and lean poultry and meat. 

Your answer is c- spermicides!