What was the nature of slavery within the Abbasid social system?
a. Slavery was known in Abbasid cities, but was virtually unknown in the countryside where most labor was performed by a free peasantry.
b. Because most unskilled labor was left to the unfree, slaves could be found in both the towns and countryside of the Abbasid Empire.
c. Slavery was limited to the non-Arab converts to Islam, and died out during the period of the Abbasid Empire.
d. According to the Quran, slavery could not exist in Islam, and the Abbasid freed all former slaves.
e. Most slaves worked under favorable conditions but were never allowed to convert to Islam.
Answer: B