Display inventory on the Display Network is published by AdSense or:

Display inventory on the Display Network is published by AdSense or:

• Right Media
• AdWords
• Teracent
• The DoubleClick Ad Exchange

The correct Answer is:

• The DoubleClick Ad Exchange

< Explanation: As long as you’ve targeted the Display Network for your campaign, your ads can appear on Ad Exchange publisher sites, in addition to those available through Google AdSense .

Read more here: https://support.google.com/adwords/answer/2472739?hl=en