Final answer:
In order to remove the clutch, the transmission must be removed from the vehicle. This allows access to the clutch assembly for service or replacement. Other components such as the flywheel may be inspected but are typically not removed in this process.
Step-by-step explanation:
To remove the clutch in a vehicle, the part that must be removed is the c). Transmission.
When servicing a clutch, the transmission is disconnected and removed to gain access to the clutch assembly. This process typically includes steps such as: disconnecting the battery, removing the driveshaft, unbolting the transmission from the engine, supporting the engine, and then carefully lowering and removing the transmission. Once the transmission is out, the clutch pressure plate can be accessed and the clutch can be removed and replaced. It is important to keep track of all components and to remember that correct reassembly is critical to the vehicle's operation.
Other components such as the flywheel, cross-shaft, or cam rings are generally not removed when servicing just the clutch. However, while the transmission is off, it is often advisable to inspect the flywheel for wear and resurface or replace it as necessary. The flywheel is bolted to the engine crankshaft, and clutch assembly is mounted to it.