It would be
D.
Kathleen is not affected by the magic around her and can see the ordinary food just as it is.
Attached you will find a file with the answers to the four questions provided.
Answer: Context Clues
Explanation: If you have an example sentence of "She's such an ignoramus, an absolute idiot." The word you recognize (i.a idiot) would help you understand that ignoramus generally means the same thing.
The word settled is used correctly in that sentence. If there are more sentences comment them I can help.