Final answer:
d) They helped gather information about Africa's geography and resources. Under the sponsorship of Prince Henry the Navigator, Nuno Tristao's exploration of the African coast and Antao Goncalves's hunting expedition in 1441 helped gather information about Africa's geography and resources, and established trade routes that contributed to Portugal's trade empire.
Step-by-step explanation:
Under the sponsorship of Prince Henry the Navigator, Nuno Tristao's exploration of the African coast and Antao Goncalves's hunting expedition in 1441 had significant impact. The expeditions helped gather information about Africa's geography and resources. They contributed to Portugal's trade empire by establishing trade routes and trading posts, leading to increased wealth and power for the nation. The expeditions did not discover a new continent or directly lead to the colonization of Africa.