question: What sentence would provide a factual answer to this question: "A flashlight can be used to"

answer: a flashlight emits light


question: What sentence would provide a factual answer to this question: "What would light bounce off of when it hits it?"

answer: when light hits a reflective object , that light bounces off that object


question: What sentence would provide a factual answer to this question: "Which relationship is true?"

answer:
friction acts to counter the motion of two objects when their surfaces are touching