Question

Which one of these questions could be most appropriately answered in a research paper, being neither too broad nor too narrow?

1. What have been the achievements of the American space program?
2. What alternative fuels offer our best prospects in the next ten years?
3. How do the symptoms of a heart attack differ from those of a stroke?
4. How many American jobs pay only the minimum wage and offer no benefits?

Answer 1

2. What alternative fuels offer our best prospects in the next ten years?

Step-by-step explanation:

In research papers always avoid answering questions that begin with "how", since the answer will be too broad for such question word. The word "what" implies a more especific answer. Having said that, option 2 is more appropriate because it is more measurable and specific.