Question 11.

The central idea of the passage is that strict culture patrimony laws reduce incentives for foreign investment in archaeological research, thereby depriving poor, but archaeologically-rich source countries of the benefits of new archaeological research. If UNESCO finances archaeological research in poor, but archaeologically-rich source countries then there would be no need for these countries to drop strict cultural property laws. So, option D, if true, would undermine the central idea of the passage.

The author is specifically talking about the case of poor, but archaeologically-rich source countries. Option A, even if true, would not undermine the central idea of the passage.

Options B and C are not related to the central idea, which is about the need to drop strict cultural property laws.

Hence, the answer is 'UNESCO finances archaeological research in poor, but archaeologically-rich source countries.'

Choice D is the correct answer.