Which of the following is the best definition of simile?

figurative language using one concept to directly mean another
figurative language comparing two different concepts by using a linking word, thus establishing limitations in the comparison
literary device used in arguments or narratives to make an abstract thought more concrete through hidden meaning and symbolism
a figure of speech in which an external object or circumstance is identified

The answer would be: Figurative language comparing two different concepts by using a linking word, thus establishing limitations in the comparison.

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.