Final answer:
Prince Henry of Portugal wanted to explore Guinea to establish new trade routes and access gold and other natural resources. Slavery also became a significant part of the trade in West Africa as the Portuguese engaged in the trading of enslaved people.
Step-by-step explanation:
According to Gomes Eanes de Zurara, Prince Henry of Portugal wanted his country to explore Guinea to establish trade routes and gain access to gold and other natural resources. This desire was fueled by stories of the immense wealth of the region, particularly the gold reserves. Slavery also became a significant aspect of Portuguese trade in West Africa as they established trading posts along the coast and engaged in the exchange of enslaved people, among other goods. Thus, the correct answer to the student's question is both (a) New trade routes and (b) Natural resources. Prince Henry's efforts were part of a larger European endeavor during the Age of Exploration to find new sources of wealth and spread Christianity.