What should you do to stop the engine and secure the motorcycle?

To stop the engine and securely shut down the motorcycle, it is essential to follow a comprehensive procedure that ensures safety and prevents unintentional operation of the motorcycle. Turning the engine cut-off switch to OFF stops the engine immediately and is a critical first step. Following that, turning the ignition OFF disengages the electrical system, which helps to ensure that the motorcycle cannot be accidentally started. Lastly, if the motorcycle has a fuel valve, turning it OFF prevents fuel leakage and adds an extra layer of safety by reducing the risk of fire hazards.

This multi-step process is best practice for safely shutting down a motorcycle, ensuring it is secure and ready for parking. Simply turning off the ignition, as found in one of the other choices, might leave the engine running for a moment longer, which can pose risks if someone accidentally engages the throttle. Leaving the motorcycle running until parked creates unnecessary danger and is not a safe practice.

Checking tire pressure before securing the motorcycle is important for riding safety, but it is not relevant to the immediate process of stopping the engine and securing the bike. Thus, the thorough approach in the correct answer ensures both safe operation and preparation for subsequent actions.