Correct answer choice is:
A. 300 years of conflict with Muslims.
Explanation:
After a second golden era in the beginning 6th century, the empire started to descend in the mid 6th century, ultimately terminating its generation of coins in the early 7th century. About this identical moment, the Aksumite community was seized to go far away inland to the mountains for camouflage, leaving Aksum as the center.
