Why did alexandria become a major center of learning?

alexandria became a major source of learning due to education resources found there. Considered as the intellectual capital of the world, it had one of the best and most extensive libraries in the world which in the third century BC was said to contain 500, 000 volumes.

Alexandria also had a museum that was a center of research, with laboratories and observatories , and had scholars such as Euclid and Eratosthenes working there.

Alexandria was also a center for biblical studies. The chief librarian commissioned the oldest Greek version of the old testament, called the Septuagint.

your answer would be (b)