"The Most Restrictive Taxon" and "The Ability to Breed Only

Question

"The most restrictive taxon" and "the ability to breed only among themselves" reference
A) members of the same domain.
B) members of the same kingdom.
C) members of the same species.
D) members of the same family.
E) members of the same genus.

Accepted Answer

The most restrictive taxon is the species level, as members of the same species share the highest degree of similarity and can interbreed only among themselves, which is known as reproductive isolation.