In __ the clutch pedal acts on a master cylinder connected by a hydraulic tube and flexible hose to a slave cylinder mounted on (external type) or in (internal type) the transmission bell housing. a. Lever-operated systems b. Cable mechanisms c. Cable-operated clutch control systems d. Hydraulic clutch release mechanisms

The correct answer is d. Hydraulic clutch release mechanisms.<br /><br />In hydraulic clutch release mechanisms, the clutch pedal is connected to a master cylinder through a hydraulic tube and flexible hose. When the clutch pedal is depressed, it pushes the piston in the master cylinder, which in turn pressurizes the hydraulic fluid. This pressurized fluid then travels through the hydraulic tube and flexible hose to the slave cylinder, which is mounted on or in the transmission bell housing. The slave cylinder then moves to disengage the clutch, allowing the transmission to change gears.