Final answer:
The clutch cover in a vehicle's clutch system is bolted to the flywheel, which is attached to the engine's crankshaft.
Step-by-step explanation:
The clutch cover is an essential component of a vehicle's clutch system. The question asks to which part the clutch cover is bolted. The correct answer is that the clutch cover is bolted to the flywheel. The flywheel is attached to the engine's crankshaft and spins with it. When the clutch pedal is depressed, the clutch disengages, separating the engine from the transmission and allowing the vehicle to change gears without stalling. The cover houses the pressure plate and clutch disc, and their interaction with the spinning flywheel allows for the transfer of engine power to the transmission.