what do we do when we are about to hear loud noises and what is loud noise in our environment called?

Question

{a}open our mouth and noise pollution
{b}close our ears ond loud nise
{c}run away and pollution to the ears
{d}none of the above

Answer 1

So you see a truck about to run into a building. Ah never mind. Its A.

Answer 2

there is a muscle that tightens on the ear drum, effectively reducing the transmission of sound waves intensity to the nerve endings. Its a protective reflex.

I suspect (if your choices are correctly reported) the first answer is open the mouth(?) Opening the mouth can stretch the salpingopharyngious muscle and pull on the canal to the middle ear. Kind of how a yawn can pop your ears on a plane flight.

Second parts answer is noise pollution. See jet flights regulations over urban areas.