Which of the following actions is NOT recommended when operating a vehicle near a motorcycle?

Driving closely behind a motorcycle is not recommended because motorcycles are smaller and can stop much more quickly than larger vehicles. Maintaining a safe following distance is crucial to give yourself enough reaction time in case the motorcycle needs to stop suddenly. Motorcycles can also be affected more by road conditions, such as potholes or debris, which might require them to make abrupt stops or evasive maneuvers. By keeping a safe distance, you ensure that you have a clear line of sight and adequate space to react to any changes in the motorcycle's speed or direction.

In contrast, actions like passing safely with sufficient space, using the entire lane width when necessary, and being alert for sudden stops are all recommended practices that promote safety for both motorcyclists and other road users.