Lucy and Upright Human are out because of the most body weight above the pelvis would make it hard to walk upright.
Im going to say it is Wise Human, as similar features would indicate a common ancestor and similar structure does not mean same capabilities with tools, that would have more to do with the size of the brain case.
So i am going to say the answer is Wise Human.
Could you give me more background about said squirrel.
I think it’s c hope this helps :)))
Answer b is the option. Because of the nature of a scientific hypothesis moves answers <span>problem.</span>