I think it’s Participial phrase
because participial phrases have past tense or present words, and in this question it has the word “had” and “hoped” and those are both past tense.
Sorry if I am wrong but i think it just seems like that’s what it could be.
Explanation:
Andy Warhol held a mirror so that society could see their consumer-selves. His background as a commercial artist, and his fascination with advertising, lead him to create refined artwork. In Campbell’s Canned Soup, he took a banal, mass-produced item and put it centre-stage. The process he used to create the work reflected a production line. Finally, in using an assembly line artistic process, and in using other people’s ideas?
You must first account for shadows
The website is Artsmart4kids.com