Generate a sentence that answers this question: "What would be a source of the smoothest rocks?".

Answer: contact between rocks over long periods of time causes rocks to smooth

Generate a sentence that answers this question: "Preparing food at the proper temperatures".

Answer: cooking food to proper temperatures protects against food poisoning by killing bacteria and viruses

Generate a sentence that answers this question: "What is least likely to absorb light?".

Answer:
shiny things reflect light