Answer:
You can stop any bleeding by appling the necessity pressure to the wound. Make sure that you use a sterile bandage, a clean cloth or a clean piece of clothing.
Immobilize the injured area. ...
Apply ice packs to limit swelling and help relieve pain. ...
Treat for shock.
Oxygen and carbon dioxide are the gases transported by the red blood cells. Oxygen is collected from the air in the alveoli to the blood capillaries. It binds to the heme group in <span>the haemoglobin<span>, which confers the red colour to the red blood cells where it is contained. </span></span>Carbon dioxide moves the other way around, from capillaries to alveoli. They are transported by the red blood cells when oxygen is exchanged by carbon dioxide from the cells' metabolism.
They can constrict or dilate because their walls are muscular.
I'd say D.
It's important to check first, then call, and care while you wait for your help to arrive.
Hope this helps,
-Tiara