question: What sentence would provide a factual answer to this question: "When would you want a radiator the most?"

answer: a radiator is a source of heat

question: What sentence would provide a factual answer to this question: "Two animals with similar diets living in the same environments leads to them"

answer: if two animals eat the same prey then those animals compete for that pey

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

answer:
a renewable resource can be replaced