How far away can stop lamps be clearly visible to other drivers?

The correct answer is 300 feet away because this distance ensures high visibility of stop lamps for other drivers, which is critical for safety on the roads. Visibility at this range allows other drivers ample time to react to the stopped vehicle, helping to prevent accidents and ensuring a smoother flow of traffic. Regulations and best practices typically dictate this distance to enhance road safety, especially in various weather conditions where visibility could be obstructed.

The other options suggest distances that are shorter than the established guidelines, which may not provide sufficient warning for drivers approaching a stopped vehicle, potentially leading to unsafe driving conditions. Therefore, 300 feet is the most appropriate and safe distance for visibility of stop lamps.