Answer:
A. creates genetic variation.
Step-by-step explanation:
Mutations are random changes in an organism's DNA and can have varying effects. One way in which mutations can be beneficial for a species is by creating genetic variation. This variation can provide the raw material for natural selection to act upon and can lead to the development of new traits and adaptations that increase the fitness of the species and allow it to better survive in changing environments. For example, some mutations might confer resistance to diseases or confer improved abilities to locate food, both of which can provide a survival advantage. Thus, mutations play an important role in driving evolution and shaping the diversity of life on earth.