question: What sentence would provide a factual answer to this question: "A light using energy can cease that activity when"

answer: a switch is used to stop the flow of current in an electrical circuit

question: What sentence would provide a factual answer to this question: "if a bush fire breaks out without human action, what might have happened?"

answer: high temperatures can cause an object to combust

question: What sentence would provide a factual answer to this question: "if you push something harder, it will"

answer:
as force exerted on an object increases , distance travelled will increase