Read the text and answer the question. In ancient Egypt, the Nile River was central to life. Its annual flooding provided fertile soil for agriculture, allowing the civilization to thrive. Egyptians developed sophisticated irrigation systems to manage the water. Socially, their society was hierarchical, with the Pharaoh at the top, followed by priests, nobles, scribes, and then farmers and laborers. Education was primarily for the elite, focusing on writing, mathematics, and religious texts, preparing scribes and administrators for their roles. What was the main reason the Nile River was important to ancient Egyptian civilization?
A) It was a source of fresh drinking water.