What was probably the most important function of the first stone tools?

Question

Quizplus · Accepted Answer

The main purpose of the first stone tools was likely to increase the amount of meat in the diet. Stone tools were used to cut and butcher animals for food, which provided a reliable source of protein for early humans. While building shelters and defending a home base were important functions for early humans, they were likely secondary to the primary function of acquiring food. The use of fire for cooking and warmth also came later in human history, after the development of stone tools.

What Was Probably the Most Important Function of the First