Answer:
D.
Step-by-step explanation:
All the statements (a, b, and c) are true about an automatic transmission clutch:
a. It is engaged when the car is in park or neutral: In an automatic transmission, when the car is in park or neutral, the transmission clutch is engaged, allowing the engine to run without transmitting power to the wheels.
b. It is disengaged when the car is in gear: When the car is shifted into a gear (e.g., drive, reverse), the transmission clutch is disengaged to allow the wheels to receive power from the engine and facilitate movement.
c. It is controlled by the computer: In modern automatic transmissions, the operation of the clutch is often controlled by the vehicle's onboard computer (ECU or TCU) to optimize shifting and ensure smooth operation. The computer monitors various factors, such as vehicle speed, engine load, and driver input, to determine when to engage or disengage the clutch.
So, all of the statements are accurate regarding an automatic transmission clutch.