Respuesta :
Answer: B. How leaders should be chosen.
Explanation: Sunni and Shi'a Muslims are two sects within Islam, and the main dispute is who should be the successor to Muhammad, i.e. caliph. According to the Sunni Muslims caliph, the ruler can be anyone who is capable enough and qualified for it, while according to the Shi'a Muslims it can be only someone who is Muhammad's cousin. This dispute arose immediately after Muhammad's death, and Ali ruled between 656 and 661, as the chosen ruler by the Shi'a Muslim, which was followed by a civil war and was one of the most difficult periods in Muslim history, although Ali was just ruler.