Question

early humans fashioned stone tools to hunt and gather for their subsistence. another important accomplishment is that they figured out a way to manage fire. these observations reinforce the idea that early humans were
a) living in sophisticated hierarchical societies.
b) clever scavengers.
c) unable to compensate for physical limitations.
d) capable of abstract thought.

Explanation:

Fashioning stone - tools and managing fire require the ability to think conceptually and plan. These are aspects of abstract thought. There is no indication of sophisticated hierarchical societies. Being able to fashion tools and manage fire goes beyond scavenging. Also, making tools and managing fire shows they could compensate for physical limitations.

Answer:

d) capable of abstract thought.