Mansa Musa was the ruler of the kingdom of Mali. He is famous for being extremely wealthy and bringing along lots of gold on his hajj. Along the way, he would throw the gold out to the people of the cities he was passing by. It was said that he gave out so much gold that he caused inflation in Alexandria.
Therefore, the answer must be (c) the fourteenth century Muslim ruler of Mali known for his hajj and the plans he brought back to Timbuktu.
