I think it’s c but I could be wrong
Answer:
A
Explanation:
'herd behavior' helps understand the question for the answer
<span>The escape of gas through a small hole in a container is called effusion. This phenomenon happens when the diameter of the hole is small enough compared to the mean free path of the gas particles. This is governed by Graham's Law which states that the rate of effusion is inversely proportional to the molecular weight of the gas.</span>