The correct order is:
Blue ad network Dynamic CPM: $4.50
Green ad network Default CPM: $3.50
Red ad network Dynamic CPM: $3.00
Ad Exchange Real-time CPM: $2.50
Orange ad network Default CPM $2.00
This question is a part of the Check your Knowledge section of the “Get Started with Mediation in Ad Manager” lesson from the “Configure Mobile In-App Ads Using Ad Manager” unit which is part of the Drive Advertising Revenue with Google Ad Manager course.