Question

the concept that defines a species on the basis of a set of unique features (morphological or genetic) that distinguish its members from other, related species is called the

breeding group concept.
phylogenetic species concept.
phenetic fossil species concept.
biological species concept.

Explanation:

The phylogenetic species concept defines a species based on a set of unique morphological or genetic features that distinguish its members from other related species. It focuses on evolutionary history and genetic - morphological uniqueness. The breeding group concept is not a standard species - defining concept in this context. The phenetic fossil species concept is more about classifying fossils based on overall similarity. The biological species concept defines a species as a group of organisms that can interbreed and produce fertile offspring.

Answer:

B. phylogenetic species concept