It is a single adjective. Usually made up of more than one word.
Example.) He adopted a two-year-old dog.
Answer:
Shelley shows how Victor would rather read the work of great scientists than have fun as a normal teenager.
Explanation:
Victor was happy to learn and the more he read and researched the more the thirst for knowledge he possessed increased as if nothing was able to satisfy it. Shelley shows how, at the age of thirteen, Victor did not have the interests of an ordinary teenager, his interests was to read complex and challenging scientific works. These readings were done quickly and all concepts were easily understood by Victor, who fell in love, more and more, with science and study.
