The homo floresiensis specimen a. lived about 20,000 ybp. b. fits allen’s rule in body proportions. c. had a small brain due to a pathology. d. is the result of genetic drift.

d. is the result of genetic drift

Explanation:

The Homo floresiensis is a small hominid species that lived on the island of Flores, Indonesia. It has been debated a lot about Homo floresiensis, is it Homo sapiens that shrunk in size because of the conditions, or is it a separate hominid species. The general consensus nowadays is that Homo floresiensis is a separate species of hominid, and this has been based on anatomical and genetic analyses. This species of hominid is very interesting as it only grew to a height of 1.1 meters, was sing tools, but it also lived for some time along side the Homo sapiens, meaning that our species had encountered these small hominids.