You might choose to use preferred layouts for dynamic display ads if your client:
- wants to choose the features but not the layouts
- wants to choose the layouts and features
- doesn’t care if AdWords chooses the layouts and features
- wants to choose the layouts but not the features
The correct answer for the above question is:
Here you can read the explanation about the Dynamic Display Ads: https://support.google.com/google-ads/answer/3265299?hl=en