The correct answer is C. They provided a fresh water supply and rich soil for growing food.
Explanation:
Early human civilizations relied on agriculture and animal domestication because only through these activities humans could settle in one place and create villages, cities, etc. as they obtained food in one place. Additionally, these activities could be better developed near rivers not only because humans could have a constant supply of fresh water for themselves (essential for survival), their crops, and animals, but also because the land near rivers is usually fertile and ideal for agriculture. According to this, the reason why first cultures developed near rivers is due to the water supply and rich soil these provided.
