Answer choice E says that "Most if not all government-sponsored agricultural research investigates agricultural techniques that do not use commercial products".
Well that's very nice for the government! But it doesn't tell us that all most agricultural techniques that do not use commercial products will be researched by the government.
If the government devotes a tiny amount of its resources to researching agricultural research, then even if all of it is concerned with non-commercial methods, this doesn't help us conclude that most agricultural research on this front will be done by the government. Why are we excluding wealthy individuals, universities, nonprofit institutions, etc.?