What is a modern-day Holy Grail?

if i was falling raindrop:

1. land safely (pretty sure that’s a tough one)

2. wished that time slowed down

3. a beautiful ending

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.

pls try