Answer: C. A poet writes a poem from the Minotaur's point of view after viewing Doré's illustration of the Minotaur from Dante's Inferno.
Medium refers to the vehicle by which a story is communicated. In this example, the original medium is an illustration. Dore chooses to convey the story of Minotaur through this medium. However, a change of medium takes place when the poet decides to tell the same story as a poem.
B because when describing a noun with adjectives, you can say: that is a green salad. but if the salad is also big I can say: that is a big, green salad.