Question 2 is based on the conversation you have just heard.

2. What does Professor Henderson say about climate change?

解析：B。本题目为细节题。问题为：Henderson教授说了什么有关气候变化的信息？出题点位置在转折后的递进，以及强调处（比较级）。正确选项原文所在句：What the economics tells us is that it’s probably cheaper to avoid climate change—to avoid the risk—than it has to deal with the likely consequences。经济学家告诉我们：避免气候变化即避免风险，要比直接应对气候变化所带来的后果要经济很多。B) It would be more costly to deal with its consequences than to avoid it，直接处理气候变化所带来的后果比直接避免气候变化要花费更多，是文中信息的同义替换。同时，此选项中关键词在原文中重复出现，也提示此选项是备选的正确选项，应予以重视和理解，其他选项干扰性较弱。