Answer:
Non-Muslim communities accepted Islam due to their interaction with Muslim communities.
Explanation:
Interactions between Muslim and non-Muslim communities greatly affected the attitudes of non-Muslim communities toward Islam or Islamic culture because these non-Muslim communities greatly affected from the teachings of Islam and accepted the religion. The Muslims at that time fully following their religion and due to this following they have good behaviour and by seeing to this behaviour the non-Muslim communities accepted Islam.
Answer: C. to move around from one setting to another.
Explanation: When writting nonfiction, the author have to be well plotted such that such makes and give his writing more freedom in moving around form one setting to another.