Answer:
Option A, predict the flooding of the Nile River, is the right answer.
Step-by-step explanation:
The Ancient Egyptian Civilization flourished along with the river Nile. The main reason why this civilization developed around this area was the annual flooding in the river which was a reliable source for the production of various crops. Ancient Egyptians developed a civilization which was very advanced in many fields, for instance, astronomy, medicine and mathematics. They significantly took interest in astronomy i,e. in the study of the night sky. They were the first to develop a 365 days solar calendar to calculate the flood in the Nile river as their priests observed that flooding returned around every 365 days.