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

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 

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