In addition to partner websites, where can you display your ads on the Google Display Network? (Choose 2)
Any mobile site or mobile app
Mobile sites that are part of the Google Display Network
The Display Network is a collection of websites—including specific Google websites like Google Finance, Gmail, Blogger, and Youtube—that show AdWords ads. This network also includes mobile sites and apps.
Read more here: https://support.google.com/adwords/answer/1704373