Clyde wants to raise the profile of his dance school. A “Display Network only” campaign can help him:

  • show ads when someone searches for dance classes
  • match his ad text to what people are searching
  • pick the most popular keywords for his campaign
  • show ads on dance websites and YouTube videos

The correct answer is:

  • show ads on dance websites and YouTube videos

 Explanation: When you advertise on the Google Display Network, your ads can appear across a large collection of websites, mobile apps, and video content. Here are some examples:

  • Google AdSense publisher sites, including AdSense for Domains and AdSense for Errors
  • DoubleClick Ad Exchange publisher sites
  • Google sites such as Google Finance, Blogger, and YouTube (Google web search not included)

Read more here: https://support.google.com/adwords/answer/2404191