Shadow and light I think is the answer
The gouge is a triangular shaped printmaking tool used to produce a rounded line. Graves are also used for scraping out the wood. Another tool used is a knife. Some commonly used types of knives include: hangit (Japanese), mat, palette, and x-acto. Leather pads, chalk, and brayers. Lastly, paper and ink is also used.
This question seems reliant on your textbook but culturally, the right answer is most likely D. the Mona Lisa.