The main setting of this story is
Pittsburgh on a hot summer day
(B) Rockville Bridge on a lazy afternoon
C
along back roads over the course of a day
(D) an airplane flight to Texas

yall naerds

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.