Q:Fact 1: Most people can survive only a few days without water. Fact 2: Water combines hydrogen and oxygen. Given the two facts above, answer the question "Most people can survive only a few days without a combination of what?" with the following options: - dehydration - hydrogen and oxygen - food and shelter - hydrogen chloride and water - scarce resources - solid, liquid, gas - lemonade and ice water - watercolor paints
A:
hydrogen and oxygen