Question

kaibab squirrels are currently classified as a ______ of aberts squirrels.
a subspecies
b species
c genus
d none of the above

Explanation:

Kaibab squirrels are a distinct but related group within Abert's squirrels, which classifies them as a subspecies. A species is a broader taxonomic rank, and a genus is even more inclusive.

Answer:

A. Subspecies