What characteristic of early hominins suggests they were problem solvers?

The ability to make complex tools is a significant characteristic of early hominins that indicates their problem-solving skills. This ability reflects cognitive advancements and creativity, as crafting tools requires understanding materials, their properties, and how to manipulate them to achieve specific functions.

The creation of tools shows that early hominins were not merely reacting to their environment; they were able to analyze challenges and devise solutions, which is a hallmark of problem-solving behavior. This skill likely contributed to their survival by allowing them to hunt, gather, and perform various tasks more effectively, showcasing their adaptability and intelligence within their ecological niche.

In contrast, reliance solely on raw materials would limit their ingenuity, while living in large groups might pertain more to social behavior than direct problem-solving capabilities. While the use of fire for warmth demonstrates a level of control over their environment, it doesn't necessarily highlight the complex cognitive processes required in the creation of tools. Thus, the ability to make complex tools stands out as a definitive indicator of problem-solving among early hominins.