What component is used to support the tilt of the motor?

The component used to support the tilt of the motor is the trim and tilt system. This mechanism allows for the adjustment of the motor's angle relative to the water's surface, enhancing both performance and maneuverability. Specifically, the trim feature adjusts the angle of the motor for optimal hydrodynamics, while the tilt allows the motor to be raised or lowered, which is especially useful for operating in varying water depths or for trailering the boat.

The other components listed do not perform this function. The propeller is responsible for propulsion, generating thrust to move the boat through the water. The crankshaft is an internal engine component that converts linear motion into rotational motion and is mainly involved in the engine's operation rather than the motor's positioning relative to the water. The steering bracket, while important for directing the boat, does not provide the necessary support for altering the motor's tilt. Thus, the trim and tilt system is specifically designed for managing the tilt of the motor, making it the correct choice.