"Usar" is to use. "Llevar" is to wear. It's just whichever you're in the mood to use. You can use either in this instance. It doesn't matter unless you try to say something like, "Yo llevo la bicicleta," (I wear the bicycle) vs. "Yo uso la bicicleta," (I use the bicycle).
"Ropa" has no plural form, just like the "clothes" doesn't. It's understood in context. You never hear the word "clothe" in English, right?
Is there not a word for "to wear"? Or there is but people say "to use" more often.
elegantes is translated as Posh, stylish, and fancy. How can I know which choice to make when translating?
the word elegante means, posh, chic, smart, stylish or elegant. Any one of those words should be accepted.
"elegante" also means fashionable or stylish so my answer "fashionable" should be accepted as correct.
Is elegant really a prevalent word in Spanish. I don't think ive ever heard anyone use it in English really