No picture? There’s not a picture so I don’t think anybody can help
The words "knot" and "plot" are examples of the poetic device, Consonance. Consonance is a figure of speech that uses repetition of consonant sounds within the sentence, phrase or line. In this case, the consonant sounds that are repeated in these two words are the sounds created by "-ot".
The answer is “D” metaphor, because a metaphor makes a connection by saying something “is” something to convey it’s meaning. Hope this helps!