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Imagine you are interested in studying evolution by natural selection (ENS) on a trait in a wildpopulation.Which population BEST fulfills the three essential elements of ENS?A population of sunflowers with orange or yellow petals. Petal color is a genetically controlled trait.Sunflowers with yellow petals attract more pollinators than sunflowers with orange petals.A population of rabbits with only brown fur. Fur color is a heritable trait. Some individuals in the population are able to find more food than others.A population of grasshoppers that exhibits two types of wing color. Wing color is controlled by a single locus with two alleles. Individuals with different colored wings are equally likely to avoid predators and mate.A population of oak trees that varies in the number of branches per tree. Number of branches is determined by the amount of sunlight a tree has access to. Trees with more branches are more likely to survive the winter.