question: What sentence would provide a factual answer to this question: "A rabbit might die if"

answer: an animal requires enough nutrients to survive

question: What sentence would provide a factual answer to this question: "When the game console's power cable was attached to the wall, electricity ended up in"

answer: sending electricity through a conductor causes electricity to flow through that conductor

question: What sentence would provide a factual answer to this question: "How low must be a population of some species drop before it is extinct?"

answer:
if a population decreases to zero then that organism is extinct