Yes I do think so I studied it
The correct answer is B. Lech Walesa. Walesa was also later the president. Gorbachev was Russian, not Polish, and A and C are the same person: the pope, which is also a famous Pole, but was not the leader of Solidarity.
Well the reasons that people hope to discover new trade routes are that they allow for: more people to trade with, which means new food, clothing, metals, and other products.