Option c is the correct answer. The first Muslim invader in India was Muhammad bin Qasim. He was an Arab military commander serving the Umayyad Caliphate. In 711 CE, he led the Muslim conquest of Sindh (part of modern-day Pakistan), marking the beginning of Muslim rule in South Asia. He defeated Raja Dahir, the ruler of the Sindhi Brahman dynasty, during his military campaigns. Muhammad bin Qasim's conquests established the Islamic province of Sindh, and he served as its governor until his death in 715 CE.