What can be the reason for a motorized bicycle skidding on bends?

Your answer is correct. All three reasons can cause a motorized bicycle to skid on bends. Heavy braking can lead to a loss of traction, especially when the wheels lock up. Wet or icy road surfaces reduce the friction between the tires and the road, making it easier to skid. Sand or loose chippings on the road also decrease traction, increasing the risk of sliding in a curve. Being aware of these factors helps you ride more safely, especially when approaching bends. Always adjust your speed and be extra cautious in such conditions to avoid skidding.