Question: How do you melt cheese on nachos?
Options:
Sprinkle your chosen cheese on top of the tortilla chips and place in the oven and set to broil.  Leave them in the oven until cheese has melted and the chips are warm.
Sprinkle your chosen cheese on top of the tortilla chips and place on the stove and set high.  Leave them on the stove until cheese has melted and the chips are warm.
Answer: Sprinkle your chosen cheese on top of the tortilla chips and place in the oven and set to broil.  Leave them in the oven until cheese has melted and the chips are warm.