Random changes in allele frequency in a population are usually called genetic drift. The reason why this is the answer is because it is a very specific word which is used to describe exactly that - random changes in allele frequency.
All the other cases; answers, here aren't correct and don't apply.
Hopefully this will help and it's what you are looking for.
<span>it the lactic acid and pyruvic acid I think</span>
You answer is this! 0.10p
