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

answer: magnetic attraction pulls two objects together

question: What sentence would provide a factual answer to this question: "Veins carry blood which means that they"

answer: veins transport nutrients throughout the body

question: What sentence would provide a factual answer to this question: "Coal mines are an essential for what industries?"

answer:
coal mine is a source of coal under the ground