You can find answers to this type of question directly in a text?

The correct answer is literal - this is the type of question to which you can find the answer directly in a text. So, you just need to read the text carefully, and you will be able to find the answers rather easily if you just concentrate a bit. The other options do not fit this description.

your answer is c) experiments with water vapor showed that elements combine in specific proportions.

explanation:

if you’re a fan of chocolate, every occasion is right for this treat. feeling down? eat some chocolate. celebrating? eat some more. want to show your valentine how special you think your sweetheart is? offer up chocolate!   people have been enjoying chocolate as a food, drink and medicine for thousands of years. the ancient maya and aztecs called chocolate kakaw and used it as medicine. they also made chocolate offerings to their gods. chocolate comes from the cacao (kuh-kow) tree, and its scientific name reflects its history. theobroma cacao translates to “cacao, food of the gods.” these days, chocolate is not just for deities. the treat has become popular around the world.