Question ID:PT17 S2 Q6 Passage:Engineer: Some people argue that the world’s energy problems could be solved by mining the Moon for helium-3, which could be used for fuel in fusion reactors. But this is nonsense. Even if it were possible to mine the Moon for helium-3, the technology needed to build viable fusion reactors that could use such fuel is at least 50 years away. If the world’s energy problems are not solved before then, it will be too late to solve those problems. Stem:The main point of the argument is that Correct Answer Choice:DChoice A:mining the Moon for helium-3 is currently not feasible Choice B:fusion reactors that are now being planned are not designed to use helium-3 as fuel Choice C:people who advocate mining the Moon for helium-3 do not realize that fusion reactors could be designed to use fuels other than helium-3 Choice D:mining the Moon for helium-3 is not a possible solution to the world’s energy problems Choice E:if the world’s energy problems are not solved within the next 50 years, it will be too late to solve those problems