[color:"orange"]The Tree of Realisation-> Buggy. only reward in gold worked for me.[/color]
Asking for a powerful weapon will place a unique crossbow in the imp hero's house, though you can get this near the end of the act regardless of your question. The other questions give you hints about things to look for in act 3, but the question is not a prerequisite.
This means asking for gold is the best choice.
