Answer:
Finding a permanent solution to ruined harvest and mass famines
Step-by-step explanation:
What Egypt could have done differently to save itself from decline is "finding a permanent solution to ruined harvest and mass famines."
This is because the major reason that is attributed to the fall of the Egyptian Empire are the following:
1. Great disparity in wealth between the aristocrats and the lower class
2. Constant war from neigboring city states
3. Culture and religion from other states.
Hence, to solve these issues, is to have a stable economy that is sustainable. And to have a sustainable economy is to ensure the city state or nation can feed itself well all the times, regardless of the climate change.
However, ancient Egypt struggled to maintain their economic growth which rest mainly on agriculture due to change in climate that effect their agricultural produce.
Therefore, in this case, the correct answer is "finding a permanent solution to ruined harvest and mass famines."