A blocked airway can kill someone in three to four minutes, but it can take more than eight minutes for an ambulance to arrive. So a simple procedure such as opening someone's airway can save their life whilst waiting for emergency help to arrive.
Grains are not a good source of vitamin A.
Hope this helps.
<span>Proteins that cannot be manufactured by the body and must be derived from food sources complete protein is essential for all the mentioned processes!!
Hope this helps!</span>
I think the correct answer would be option C.