Answer:
A.The deer with the mutation will not survive, and the trait will disappear from the population.
Step-by-step explanation:
Due to the law of natural selection, the deer will not survive cuz it won't be able to outrun predators. If it does not survive, there's no way it will be able to reproduce and pass his genes onto next generation. Therefore, the trait will die with him and not be passed onto the rest of deer population