Question

what is the second-most specific level of classification in the taxonomic system? genus species kingdom domain

Explanation:

The taxonomic hierarchy from most general to most specific is Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species. So the most specific is Species, and the second - most specific is Genus. Kingdom is a more general (less specific) level, and Domain is the most general.

Answer:

A. Genus