Explain India's Caste System
What is it? Why did they use it?

India's caste system is among the world's oldest forms of surviving social stratification. ... The system which divides Hindus into rigid hierarchical groups based on their karma (work) and dharma (the Hindi word for religion, but here it means duty) is generally accepted to be more than 3,000 years old.

Explanation:

7.03-1.70=5.33 and 6.80+5.09=11.89 and 5.5-3.01=2.49

the answer is:

c. islam and christianity

explanation:

islam and christianity are widely practiced in africa. islam is practiced due to its spread from the middle east into africa, and christianity is practiced due to the colonization of africa by the british empire.