c. Syncretic forms of religion such as Vodun developed in the period 1450 to 1750.
Step-by-step explanation:
During the period of 1450-1750, the followers of monotheistic religions like Islam and Christianity was gradually increased due to missionary activities, conquest and trade. Even the geographic scope of the monotheistic religions was also increased.
Scholars, Muslim holy men and traders started campaigning Islam in the year of 1450-1750. This led to increase in belief of Islam
In the period of 1450-1750, Vodun- a syncretic form of religion was developed as a result of strengthened relation between the Eastern Hemisphere and the Western Hemisphere.