Final answer:
The correct option is d) "U" shaped.The release fork in a pull-type clutch is typically "U" shaped, designed to pull the disengagement mechanism for clutch operation.
Step-by-step explanation:
The release fork in a pull-type clutch is typically "U" shaped. This design allows the fork to pull the disengagement mechanism, which disengages the clutch, allowing for a gear change or coasting. Unlike push-type clutches, where the fork pushes the mechanism, pull-type clutches require pulling action facilitated by this kind of fork shape to operate correctly.
The release fork in a pull-type clutch is cone-shaped. It is responsible for applying pressure to the diaphragm spring in order to disengage the clutch. The cone shape allows for smooth engagement and disengagement of the clutch, improving the overall performance of the vehicle.