Answer:
C
Explanation:
Genetic drift is when the frequency of a gene variant in a population of species changes due to a change in the environment. Let's use a variety of colored marbles as an example. I have a jar of colored marbles: red, blue, green, and pink. My little brother accidentally shook the jar and lost all the red and blue marbles. Thus, I have only green and pink marbles left.
With genetic mutation, some organisms get damaged/die from the change in the environment, while some don't get too negatively affected.
Thus, the answer C is correct because a change in the environment affected the probability of getting a certain tongue length.
Have a lovely rest of your day/night, and good luck with your assignments! ♡
