The answer to your question is c.invented because it's a past participle.
One strategy you can use to determine the meanings of unknown words and phrases is to look at the context clues. Context clues might be something like a picture, words or phrases you already know, using what you know about the text already.
Hope this helps!
The text that supports the idea that Kovaloff is intimidated by his nose is: "you should know where you belong". The correct answer would be option A. Being intimidated is being frightened or not confident on a certain situation. In this case, this statement indicates that Kovaloff is indeed intimidated by his nose.