Concept:Ali b. Abi Talib was the fourth caliph of Islam, and his rule began in the month of June in the year
656 C.E.
Explanation:Ali b. Abi Talib was a cousin and son-in-law of Prophet Muhammad.
He is widely recognised as the fourth rightly guided caliph.
His caliphate began after the death of the third caliph, Uthman b. Affan.
Historical sources record the beginning of his rule in June
656 C.E.
His caliphate lasted until his death in
661 C.E.
The other years listed, namely
632 C.E.,
634 C.E., and
644 C.E., belong to the caliphates of Abu Bakr, Umar, and Uthman respectively.
Therefore, the caliphate of Ali b. Abi Talib began in June
656 C.E.
Answer:A.
656 C.E.