Question

1. which species is our closest extinct relative?

homo erectus
homo neanderthalensis
australopithecus afarensis
homo habilis

Explanation:

Among the given options, Homo neanderthalensis (Neanderthals) shares a very close evolutionary relationship with modern humans (Homo sapiens). Genetic and fossil evidence shows that Neanderthals are our closest extinct relatives, with interbreeding between Neanderthals and early modern humans having occurred. Homo erectus, Australopithecus afarensis, and Homo habilis are more distantly related or represent earlier stages in human evolution.

Answer:

B. Homo neanderthalensis