Answer:
Many people think a stuffy nose is the result of too much mucus in the nasal passages. However, a clogged nose is actually caused by inflamed blood vessels in the sinuses. These irritated vessels are usually triggered by a cold, the flu, allergies, or a sinus infection.
Explanation:
The answer is A,This is your answer.
Hope this helps.
The answer is B periodization
Don't quote me on this but i think its B) Central Asia
