According to Mark's Gospel, the first miracle of Jesus was

According to Mark's Gospel, the first miracle performed by Jesus was healing a man with an unclean spirit. This is option C and is the correct answer. In Mark 1:23-26, Jesus was teaching in a synagogue when a man with an unclean spirit interrupted him. Jesus commanded the spirit to come out of the man and the man was instantly healed. This miracle amazed the people who witnessed it and news of it spread throughout the region.

It is important to note that while this was the first miracle recorded in Mark's Gospel, it may not have been the first miracle that Jesus performed overall. The other Gospel accounts, such as Matthew, Luke, and John, record different miracles that Jesus performed, some of which occurred before the event recorded in Mark's Gospel.

Miracles were an important aspect of Jesus' ministry, as they demonstrated his power and authority. They also served to help people believe in him and his message. Overall, the miracles of Jesus are a significant part of Christian theology and continue to be studied and discussed by scholars and believers alike.