Answer:
Correct answer is Slaves and unskilled laborers
Explanation:
Slaves and unskilled laborers are correct answer because this groups had no rights, nor political, nor even basic human rights. They were working either for free or for smallest possible wage.
Farmers and soldiers were not high on the ladder, and were just above the previous class. Still, were not the lowest class.
Officials and scribes were very important part of hierarchy. For example, only 1 percentage of people know how to read and write.
Artisans and merchants were beneath officials but above soldiers in the hierarchy.
