question: What sentence would provide a factual answer to this question: "A person can know if they need a down vest by checking the"

answer: a thermometer is used to measure temperature

question: What sentence would provide a factual answer to this question: "Sea nomads' larger spleens let them"

answer: living in an environment causes an organism to adapt to that environment

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

answer:
as mileage per galon of gasoline increases , the amount of gasoline used will decrease