Answer:A)Engine flywheel
Explanation: Clutch is the part of the vehicles like car,motorbike etc that persist the property of the engaging and non-engaging of the engine from the wheels.Manual clutch is handled by the driver of the vehicle.
The clutch is embedded on the flywheel which is a heavy device connected with engine. This part stores some amount of energy and works on the delivery of the power.Thus the correct option is option (a) as the other options are not the defined parts of the vehicle.