<span>Exercise leads to prodution of endonorphins, which acts as analgesics/pain releivers. It also causes a state of calm and relaxation, which calms heart also. HDL is increased and LDL is decreased. Blood flow and circulation of oxygen is improved. Neurotransmitters are released, like cortisol, which decrease stress.</span>
I would have to go with B) because the government doesn't do A and C in every place but they do make sure all food products are safe (FDA)
Hope This Helps :)
1) are made mostly of water
not 2, because it also carries carbon dioxide out of the body,
not 3, because white blood cells fight diseases
not 4, because it can also be found in veins and capillaries
hope this helps
