Answer (Open bonnet and tell before driving)

Open the bonnet, there will on most cars be a release lever you will need to pull from within the cockpit first, and then there will be a secondary catch under the bonnet to fully release before you can open it. Then identify the brake fluid reservoir. Point out the minimum and maximum markings and explain that the level should be between these. Ensure that the car is parked on a flat level surface before checking. Once explained ensure bonnet is FULLY closed.