Shopping ads can appear on:
Google Search Partner websites
all of the answers are correct
Ads can appear above or below search results on Google Search. They can appear beside, above, or below search results on Google Play, Google Shopping, and Google Maps, including the Maps app. Ads might appear with search results on websites of Google search partners. For text ads, search partners include hundreds of non-Google websites, as well as Google Video, and other Google sites.
Read more here: https://support.google.com/adwords/answer/1704373