The fourth alternative is correct (D).
After the death of the Prophet Muhammad, founder of Islam, two aspects of the Muslims, the Shiites and the Sunnis, who are the two main groups of Islamism, share beliefs and the Islamic faith, but have political distinctions.
The Shiites, who believed that the leadership of the Muslim nation should continue among the family of the Prophet Muhammad, so that Ali Bin Abu Talib, son-in-law of Muhammad, would become the new leader.
The Sunnis, who believed that after the death of the Prophet Muhammad, the new leader should be elected from the able men. This is what happened when Muhammad's friend and counselor, Abu Bakr, became the first caliph of the Islamic nation.
