Describe the cause of
genetic drift in small
populations.

Random forces lead to genetic drift

Explanation:

These changes in relative allele frequency, called genetic drift, can either increase or decrease by chance over time. Typically, genetic drift occurs in small populations, where infrequently-occurring alleles face a greater chance of being lost

hope i can help u and that i wasent wrong

i think that d. wind is the answer.   i missed the question when i answered a. currents.