As early human ancestors evolved, one common characteristic is that dominant groups tended to be:Physically strongerMore isolatedMore violentMore intelligent

As early human ancestors evolved, dominant groups tended to be more intelligent. This is because intelligence allowed them to create tools, develop language, and establish social structures, which gave them an advantage over other groups.

Here are the steps to arrive at this conclusion:

1. Physical Strength: While physical strength was important in the early stages of human evolution, it was not the defining characteristic of dominant groups. Many animals are physically stronger than humans, yet humans became the dominant species.

2. Isolation: Isolation would not have been beneficial for early human ancestors. They were social creatures who relied on group cooperation for survival.

3. Violence: While there may have been violent conflicts between groups, violence is not a sustainable strategy for dominance. It can lead to the destruction of the group itself.

4. Intelligence: Intelligence is the most likely characteristic of dominant groups. The ability to create and use tools, to communicate and plan, and to adapt to changing environments would have given these groups a significant advantage.

Therefore, the answer is "More intelligent".