I am thinking its D or A but it may be wrong
<span>When an individual experience
choking, it means that there is an obstruction of the air flow and it prevents
partial or even complete breathing. The
obstruction of the airways in an act of choking is occurring at the level of
the trachea or pharynx, and in terms of food, it is mostly in the pharynx.</span>
A healthy activity enchaging is biking to school
Answer:
The answer is B. It increases oxygen flow to the muscles
