Which of the following provides the best example of a situation in which genetic drift would play a significant role within a population?

W) Non-random mating among plants with purple flowers leads to inbreeding and homozygous lethal conditions that prevent seed germination

X) In a large population of plants with purple flowers, one individual exhibits white flowers caused by a mutation

Y) In a small population of plants with purple flowers, three white-flowered individuals exist. A deer eats two of the three white flowered plants, thus removing them from the population

Z) In a small population of plants where some individuals have white and some have purple flowers, bees strongly prefer the purple flowers, thus more seeds are produced from the purple individuals.
Y) IN A SMALL POPULATION OF PLANTS WITH PURPLE FLOWERS, THREE WHITE-FLOWERED INDIVIDUALS EXIST. A DEER EATS TWO OF THE THREE WHITE FLOWERED PLANTS, THUS REMOVING THEM FROM THE POPULATION