Which of the following increases the risk of losing control on wet surfaces?

Answer: B — Braking swiftly

Braking swiftly on wet surfaces significantly increases the risk of losing control. When you brake suddenly, especially in wet conditions, your tires can lose traction due to the reduced grip on the slippery surface. Wet roads can cause a motorcycle's tires to hydroplane, meaning that the tires lose contact with the road due to a layer of water. This loss of traction can make it difficult to control the bike, potentially resulting in a fall or accident. In contrast, techniques such as maintaining a steady speed or riding at a slower pace can help ensure better control and stability on wet surfaces, while using your headlights improves visibility and alertness but does not directly affect traction.