Can someone help me with my Art History ignment?

Paganism is not a religion. Pagan is the word used to describe any religion that has a polytheistic basis (many gods instead of the monotheistic one God). So yes, you could do a pagan religion, such as Hinduism or Greek Mythology, but no, not Paganism itself. Just Wikipedia "Paganism", its much faster than waiting for people to respond to your question.