Final answer:
The most critical aspect of farming in Ancient Egypt was planning around and managing the inundation of the Nile River, which allowed for controlled irrigation and provided nutrient-rich soil favorable to agriculture.
Step-by-step explanation:
The most critical aspect of the farming process in Ancient Egypt was planning around and managing the inundation of the Nile River. The regular flooding of the Nile at predictable intervals allowed for controlled irrigation and provided nutrient-rich soil favorable to agriculture. This flooding brought only welcome deposits of rich sediment, which created fertile lands that fed the growth of the Egyptian civilization.