Different- mount olympus is in nyc at the top of the empire state building (an actual place in the human world) & above the world (very top floor that does not really exists to humans); underworld is a place that non humans never see/know of & it's under the world
I believe it's C.
We know that <span>a </span>clause<span> is the smallest grammatical unit that can express a complete proposition.
What do you think?</span>