Verified Answer :

STP
signifies standard temperature and pressure. This conditions are at 1
atmospheric pressure and 0 degrees Celsius. It has been said that at these
conditions, one mole of a gas molecule is equivalent to 22.4 liters of volume.
Therefore, the correct answer is option B. 

Answer:

The answer is B : 22.4

Hope this helped!! :) <3

Explanation: