What is the largest natural population of organisms that can interbreed to produce fertile offspring? a) class b) family c) genus d) species

The answer is d because species can interbreed and produce fertile offspring

Ifound this on google “aristotle (384–322 bc) in western scientific taxonomy the greek philosopher aristotle was the first to classify all living things, and some of his groups are still used today, like the vertebrates and invertebrates, which he called animals with blood and without blood.” i hope this you for what your looking for.