Consider a small group of rodents being introduced to an island that previously lacked any mammal species. after several thousand years, there are now eight new species of rodents. which best describes the progression in the formation of these eight new species?

the phenomenon of REPRODUCTION and Evolution with acquired characteristics best describes the progression in the formation of these new species.

Explanation:

As there were previously no mammal species on that island so the reproduced and fertilized with each other to produce new offspring.

and in the evolutionary view of life , evolution leaves observable signs.the populations of individual species become better adapted to their local environments through natural selection.these eight species progressed with evolution that fitted them best to their environment so they reproduced and survived.

i believe the correct answer is d