Final answer:
A broken white line on a roadway means it separates two lanes traveling in the same direction, allowing for lane changes when safe. The correct option is option C.
Step-by-step explanation:
The question pertains to the meaning of road markings, specifically a broken white line on the roadway. When you see a broken white line between lanes of traffic, the correct option is C: it separates two lanes traveling in the same direction. This means that vehicles can change lanes or pass other vehicles when it is safe to do so, as long as they do not cross the line while it is solid.
This type of marking is designed to provide guidance to drivers, helping them maintain orderly traffic flow and safe driving practices on multi-lane roads.