Answer:
B) the Nile flooded at the same time every year as opposed to the sporadic and unpredictable flooding of the Tigris and Euphrates Rivers.
Step-by-step explanation:
The Nile River was different than the Tigris and Euphrates because the Nile flooded at the same time every year as opposed to the sporadic and unpredictable flooding of the Tigris and Euphrates Rivers. This made it easier for Egyptian farmers to know exactly when to plant crops.