Explanation: The Ming Dynasty in its later years tried to enact measures to control foreign merchants’ endeavors in China, as the last paragraph details the Ming Canton system. Eliminate (A) because it is not supported by the passage. Eliminate (C) because the system of controlling trade is clearly present in the passage, so the Ming had to have had some interest in it. Eliminate (D) because it conflates China with Japan’s later restriction of foreign merchants. Choice (B) is the answer.