If you must stop quickly while turning, what should you do?

When you find yourself in a situation where you need to stop quickly while turning, straightening the motorcycle upright before applying the brakes is crucial for maintaining control and stability. Leaning into a turn changes the bike's dynamics, and braking sharply in that position can cause the motorcycle to lose traction and potentially skid out from under you.

By first straightening the motorcycle, you shift the weight distribution in a way that allows for more effective braking. When the bike is upright, you can apply the brakes with better control, reducing the risk of tipping over or losing grip on the road.

This technique emphasizes the importance of body positioning and the bike's balance—factors that are vital for safe motorcycle operation, especially in emergency situations. The other choices would not provide the same level of control, leading to unsafe conditions.