Answer: Look at 1 in definition of aura
Explanation:
au·ra
/ˈôrə/
Learn to pronounce
noun
noun: aura; plural noun: aurae; plural noun: auras
1.
the distinctive atmosphere or quality that seems to surround and be generated by a person, thing, or place.
"the ceremony retains an aura of mystery"
2.
(in spiritualism and some forms of alternative medicine) a supposed emanation surrounding the body of a living creature and regarded as an essential part of the individual.
"emotional, mental, and spiritual levels form an energy field around the body known as the aura"
The question ask to choose among the following choices that best answer that could fit and support the statement in your question, and based on my further analysis about it, I came up with an answer of letter D. Substance. I hope you are satisfied with my answer and feel free to ask for more
C: should've
C is the answer you want
The poetic device that the speaker use in the line is "Allusion."
Hope this helps