Answer:
Impression or Idea.
Explanation:
Melissa gave the <u>impression</u> of being Heather's friend, but secretly she spread rumors behind her back.
Melissa gave the <u>idea</u> of being Heather's friend, but secretly she spread rumors behind her back.
Dunno if this helps.
I'd say C, pose poems are known for the way in which they avoid conventional poetic techniques, because the rest are true. Annabel Lee is about his dead wife (aka his cousin), The Cask of Amontillado does take place during a Mardi Gras scenery, and The Raven uses repetition for dramatic effects.