question: What sentence would provide a factual answer to this question: "dissolving sugar in water will cause it to"

answer: dissolving a substance in water causes the water to taste like that substance

question: What sentence would provide a factual answer to this question: "The source of a type of energy we use is a"

answer: the sun is the source of solar energy called sunlight

question: What sentence would provide a factual answer to this question: "The water treatment plant boiled all the water that came to them for what reason?"

answer:
treating water is used to remove harmful substances before drinking