<span>Imported foods are regulated by the Codex Alimentarius Commission.
Foods entering the United States from abroad must meet the same safety standards as those produced inside the U.S.
INFOSAN enforces international food safety regulations.</span>
Physical activity ultimately lowers the blood pressure and improved functioning of the heart. Pumping and flowing of the blood is improved, and the arteries' deposited fat dissolves, and thus, the risk of developing a heart disease decreases.
OK so basically the location of the sinoatrial node will be in the right atrium
I believe your answer is D