In Assassin's Creed Origins, Bayek's hometown is Siwa. Bayek is a Medjay from the Siwa Oasis in Egypt, and the game opens there before expanding across Ptolemaic Egypt.
Siwa is both a real oasis and an important historical setting in the game. Its remote desert location contrasts with large urban centers such as Alexandria and Memphis, helping establish Bayek's local identity and his role as a protector.
Alexandria, Memphis, and Cyrene are all significant locations in Origins, so they can appear plausible in a quiz. They are not Bayek's hometown. The game's story follows Bayek and Aya as they investigate the people and events behind the formation of the Hidden Ones.