I am going to share some links with you that should help you answer your question.
https://www.mdc.edu/wolfson/Academic/ArtsLetters/art_philosophy/Humanities/history_of_modernism.htm
http://classroom.synonym.com/difference-between-modernist-romanticism-8748756.html
C, the text includes good information about the eiffel tower so it wouldn’t be b because it isn’t persuading anything. it also isn’t a story.
Miller's title, The Crucible, is appropriate for the play. A crucible is a container made of a substance that can resist great heat ; a crucible is also defined as a severe test. Within the context of the play the term takes on a new meaning: not only is the crucible a test, but a test designed to bring about change or reveal an individual's true character. The witch trials serve as a metaphorical crucible, which burns away the characters' outer shells to reveal their true intentions and character beneath. Throughout the play, Miller carefully peels away the layers of each character so that the audience not only can identify the character's motivation, but also can reevaluate the character through his or her actions. In other words, the audience observes the character as he or she is tested, and the audience ultimately determines if he or she passes the test.
Note: I apologize if my answer is wrong.
I would interpret it as how people only look at reality, not what's inside or what they can't see.
