Wrong move
Direct answer
The risky shortcut is entering too fast and trying to fix it with continuous braking halfway down. Choose a gear low enough before the downgrade to control speed without riding the service brakes; exact gear depends on weight, grade, transmission, road, and company procedure.
How to use this answer
Read the answer once, then prove it by choosing an answer in a practice question before looking at the explanation. If the miss repeats, tag the domain as Mountain driving and drill a smaller set before returning to mixed practice.