Which of the following conditions requires extra caution while riding?

Extra caution is essential when riding on wet or icy roads due to the reduced traction and increased risk of losing control of the motorcycle. Wet surfaces can cause tires to hydroplane, especially if there are oil residues or debris. Icy conditions can lead to sudden loss of control since brakes and acceleration become significantly less effective. Riders must be especially vigilant about maintaining a safe speed, increasing stopping distances, and being smooth in their inputs to prevent skidding or losing balance.

While clear and sunny weather, parking lots, and daytime riding can present their own challenges, they do not pose the same immediate risk factors as slippery roads. Wet or icy conditions dramatically alter how a motorcycle handles, requiring heightened attention and skills to navigate safely.