Which best shows how egypt became an empire?

Im taking the test and i also agree with A!

The correct answer is A.

During his reign, Ahmose I reunited the lower and upper Egypt, expelling the Hyksos from the Nile Delta and restoring the rule of Thebes over the Egyptian territory. As a response to the foreign rule of the Hyksos and the attacks from the South, the next Pharaohs expanded the Egyptian frontiers to the Levant (Syria) and Nubia in order to avoid new threats. These military achievements were accomplished thanks to the introduction of new military technologies, like the use of horses and chariots, the sickle-sword khopesh, and the improvements in body armor by adding metal scale coverings.