question: What sentence would provide a factual answer to this question: "A telescope is used to observe what?"

answer: a telescope is used for observing stars

question: What sentence would provide a factual answer to this question: "Microscopes"

answer: magnifying makes seeing small things easier through using a microscope

question: What sentence would provide a factual answer to this question: "A ramp can move a person to what level?"

answer:
an inclined plane is used for raising objects