Final answer:
The part highlighted in yellow in the picture is the d) Tone Ring.
Step-by-step explanation:
The part highlighted in yellow in the picture is the Tone Ring.
A tone ring is a component in some automotive systems that is used to determine the rotational speed of a wheel or other rotating component.
It typically consists of a ring with evenly spaced teeth or notches that passes by a sensor as the wheel rotates.
The sensor detects the passing teeth and sends signals to the vehicle's computer, which can then calculate the speed of the wheel.