Which statement is true regarding the engine flywheel?

The engine flywheel serves several important functions in an internal combustion engine, which is why the selection indicates that all the options presented are true.

First, the flywheel acts as an inertia wheel. It stores rotational energy and helps to smooth out the power delivery from the engine. When the engine fires, the power pulses can create fluctuations in speed, and the flywheel’s inertia helps to maintain a more consistent engine speed, contributing to better overall drivability.

Second, the flywheel absorbs power from the engine during compression and expansion strokes. It temporarily stores the energy produced by the engine and then releases it to provide a smooth torque output. This helps in maintaining momentum when the engine experiences moments of low power.

Third, the flywheel indeed provides a mounting surface for the engine's clutch assembly in manual transmission applications. This is critical for engaging and disengaging power from the engine to the transmission, allowing for smooth gear shifts.

Considering these roles, it is accurate to say that all three statements regarding the engine flywheel are true, which is why the answer indicates that all options are correct.