I don't know what is the answer. Can anyone tell.

I wish they wouldn't talk such non-sense

those boy's have no intelligence

The commander's in chief ordered the army to retreat

pick up those bamboo and bring it here

These water pipe's are made of lead

My sister is looking for employment's with Air India

Explanation:

the gas pressure p, gas volume v, and gas temperature t are given in the formula:   pv=nrt,

r is the gas constant, and n is the number of gas moles.

if the container is cooled and remains under atmospheric pressure, where r is a constant that does not change, the volume of the container remains the same, the conclusion is drawn that, with all other values ​​unchanged, the number of gas moles n, is decreases.

the right answer is a.