In which scenario can you consider passing on the right?

Passing on the right can be deemed appropriate in situations where the left lane is occupied, provided that it is safe to do so. This typically occurs when the vehicle ahead is making a left turn or is otherwise unable to move to the left lane. In such cases, the driver in the right lane can proceed to maneuver around the vehicle on the left, as long as they are not violating any traffic laws or safety regulations.

The other scenarios do not provide valid circumstances for passing on the right. For instance, passing in a no-passing zone is prohibited regardless of traffic conditions, as these areas are designated to enhance safety. Similarly, any instructions provided by road signs must be adhered to, which may include rules against passing. Additionally, the suggestion that one could pass on the right under all circumstances disregards the safety factors that should always be paramount in decision-making while driving.