The statement that best explains Musa’s motivations for going on the Hajj is: The Hajj was a demonstration of Musa’s piety, wealth, and power.
Mansa Musa, the king of the Mali Empire, is well-known for his pilgrimage to Mecca in the 14th century, which showcased his immense wealth and devotion to Islam, as well as enhancing his status and influence both within his own empire and in the broader Islamic world.