question: What sentence would provide a factual answer to this question: "An example of thermal energy is"

answer: a thermal energy conductor transfers heat from hotter objects to cooler objects

question: What sentence would provide a factual answer to this question: "When fish travel in the opposite direction of flow they are going to"

answer: An example of a reproductive behavior is salmon returning to their birthplace to lay their eggs

question: What sentence would provide a factual answer to this question: "A boy is standing in the bathroom brushing his teeth, but the lights are off in the bathroom. However, his room is next to the bathroom and his bedroom light is on. The bathroom is still bright, because the mirror reflects"

answer:
a mirror reflects light