The answer is the difficulty of determining what is real. Typical modernists had a loss of meaning in the modern world, so there themes included the question of "What is real?" There was a search for meaning in a world without God, and a search for self with a critique of traditional values.
The statement is mostly an example of loaded words and phrases, because the quotes uses synonymous adjectives one after another ("vast expanse") and the quote uses other descriptive words to create a defined image in one's mind.
The long, winding corridor is illuminated with oblong skylights
The correct option is FREE VERSE.
Free verses refers to those lines in poems, which have no set meter, no rhyme scheme, or any specific structure. Free verses is consider to be an open form of poetry, which does not use any consistent pattern in term of rhyme, meter, etc.
Fun fact about me: I like to think of unicorns whenever I get nervous, just the aesthetic of them