Why does nail polish remover evaporate the fastest?

Answer 1

Because it's more volatile than whatever else you were testing. Which basically means "it evaporates the fastest", so that's not all that helpful. Without knowing specifically what you're comparing it to or what kind of nail polish remover it is it's hard to be certain, but many nail polish removers are based on acetone, which has a fairly low boiling point and a fairly high vapor pressure at "room temperature".