Answer:
D. Turn on the lights and then walk around the outside of your car.
Step-by-step explanation:
It is the best way to check the exterior lights in case you have doubts about its functioning. The other options are more complicated than the D that is easier to do. In the case you notice that a light is not working you will directly see which one is and then yes you will remove and inspect it for damage.
I hope this answer helps you.