Question

indexing the rotor______
means marking the rotor to the hub using a paint marker or crayon to keep the newly matched rotor and hub assembly positioned together correctly
is not important
means marking the rotor and hub to keep them on the same side of the car as they started at
repositioning the rotor on the hub after using a bench lathe to achieve the lowest lro

Explanation:

Indexing the rotor involves marking it to the hub with a paint - marker or crayon to maintain correct positioning of the rotor - hub assembly. This is important for proper functioning.

Answer:

Means marking the rotor to the hub using a paint marker or crayon to keep the newly matched rotor and hub assembly positioned together correctly