What is a key step in the process of making a safe turn on improved surfaces?

A key step in the process of making a safe turn on improved surfaces is to always check blind spots. This is crucial because blind spots are areas around the vehicle that cannot be directly seen through the mirrors. By checking these areas, the driver ensures there are no vehicles, pedestrians, or obstacles present that could lead to an accident during the turn. This practice significantly enhances situational awareness and promotes safety for everyone on the road.

The other options suggest practices that do not necessarily contribute to safety during turns. For instance, slowly driving through the intersection may not allow for the necessary visual checks, and immediately changing lanes could create confusion and increase the risk of a collision. Additionally, relying solely on the right mirror limits the driver's field of vision, possibly overlooking hazards on the left side or in the rear. Hence, checking blind spots remains the most critical action for safe maneuvering when turning.