Correct answer
Clutch disc.
The clutch disc. The pressure mechanism clamps it against the flywheel, allowing rotation to reach the gearbox input. Disengaging the clutch interrupts that transmission. The gearbox and final-drive/differential assembly have other functions and are not the part pressed against the flywheel. Drive reaching the wheels also requires a selected gear and a functioning drivetrain: an engaged clutch alone does not drive the wheels when the gearbox is in neutral.
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Clutch disc.
Gearbox (gears).
Final-drive bevel gear and differential assembly.
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