(A) General categories
(B) Pricing rules
(C) Ad types
(D) Backup ads
The Backup ads feature in Ad Manager gives you the option to display a color, image, or HTML page if Google isn’t able to show targeted ads.
This question is a part of the Check your Knowledge section of the “Use Rules and Declarations to Manage Ads” lesson from the “Manage Ads with Rules and Protections” unit which is part of the Drive Advertising Revenue with Google Ad Manager course.