Prophet Muhammad founded the faith of Islam in the ______ century.

The correct answer is B, Seventh. Prophet Muhammad was born at Mecca in about 570 CE and began preaching the faith of Islam after his first revelation in about 610 CE, so the religion was founded in the seventh century. His migration from Mecca to Medina in 622 CE, called the Hijra, marks the start of the Islamic calendar, and he died in 632 CE. The revelations were later compiled as the Quran. Islam reached the Indian subcontinent within decades, first through Arab traders on the Malabar and Konkan coasts and then with the Arab conquest of Sind under Muhammad bin Qasim in 712 CE. A is wrong because the sixth century ended before the Prophet began his mission. C is wrong because by the ninth century Islam had already spread from Spain to Central Asia. D is wrong because the eighth century saw the expansion of Islam, not its founding. Exam tip: Prophet Muhammad born about 570 CE, Hijra 622 CE, death 632 CE, Arab conquest of Sind 712 CE.