In order to be classified in the same species, a group of organisms must be able to A. interbreed and produce fertile offspring. B. live in a common area. C. eat similar foods and possess a similar diet. D. express the exact same genes and phenotypic traits.

In order to be classified in the same species, a group of organisms must be able to A. interbreed and produce fertile offspring

Explanation:

A group of organisms living in a common area is not enough to be classified in the same species. Eating similiar foods and possessing a similar diet either.  Biologocial concepts distinguishes two species based on the degree of genetic exchange  between their gene pools. In order to be classified in the same species, a group of organisms must be able to interbreed and produce fertile offspring. Two very closely related species that have diverged from each other quite recently shared a common ancestor recently in evolutionary time. They will persist only as distinct  biological species if they have reproductive isolation from one another.

interbreed and produce fertile offspring

Explanation: Because it make's sens is common knowledge :-)