Answer: Option (D)
Explanation:
Early homo were capable of making stone tools, that are still found today, preserved in many museums.
They were basically used for the hunting purposes, hunting of animals but not as large animals like dinosaurs, as man never existed during the time of dinosaurs. These stone tools were used by them to hunt the smaller animals and cut their meat and also to protect from other harmful animals including the carnivores.
Thus, the correct answer is option (D).