Two taxonomic species are distinguished from each other by

A. Their failure to interbreed

B. Their ability to exchange genes freely

C. Their similarity in correlated morphological characters

D. Discontinuity in a set of correlated characters

Answer: Option A

Solution(By Examveda Team)

Two taxonomic species are distinguished from each other by their failure to interbreed.
Interbreed is the act of mixing different species or varieties of animals or plants and thus producing hybrids.
An ancestral species is split into two or more descendant species that are genetically different from one another and can no longer interbreed.