A. Macbeth is a heroic soldier and an honorable man. B. Macbeth is a merciless killer, and everyone is slightly afraid of him.
C. Macbeth is emotionally and physically weak.
D. Macbeth is a cruel, villainous man and is not to be trusted.

i have a basic answer but if you want a more in depth

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.