question: What sentence would provide a factual answer to this question: "Which is more accurate:"

answer: gills are used for breathing water by aquatic animals

question: What sentence would provide a factual answer to this question: "If a beaver does what it does in order to build its home, then near the river will form"

answer: damming a river can cause a lake to form

question: What sentence would provide a factual answer to this question: "Why did the chicken cross the road?"

answer:
if a habitat can no longer support animals then those animals will move to another area