D) Dependency on slave labor made the empire weaker
Explanation:
An average wealthy Roman had about 400 slaves, and most of them depended on slaves so much that they couldn't perform simple tasks such as cooking or getting dressed on their own. As they had to pay high taxes on slaves, the wealthy eventually started freeing them, and the freed laborers started forcing the lower class out of jobs. Without a job, people belonging to the lower class could not survive on their own, so they became dependent on the government. The government would spend most of its money on the lower class, giving people free access to bread, oil, wine, etc.
