What type of lines mark the right edge of the roadway and parking spaces?

The correct choice identifies that solid lines are used to mark the right edge of the roadway and parking spaces. Solid lines serve as clear indicators for drivers, establishing boundaries that should not be crossed. This is particularly significant for ensuring that vehicles remain safely within designated areas, whether on the road or when parked. The solid line emphasizes the importance of staying within specific zones for safety and order in transportation.

Dashed lines, by contrast, are typically used to indicate lanes that can be crossed, allowing for maneuvers such as lane changes when safe. Double lines, consisting of two solid lines, create a prohibition against crossing, which is useful in areas needing extra caution like no-passing zones. Colorful lines, while not standard terminology in traffic markings, suggest variations that may be found in specific contexts but do not represent official markings for road edges or parking. Thus, solid lines are the appropriate and standard choice for delineating these boundaries.