You should always remember to keep your eyes while you are driving
A. on the car ahead
B. moving
C. on the center line.

You should always remember to keep your eyes moving while you are driving

Explanation:

Eye movements are highly important for a driver while driving especially over long drives. The basic three important rules while driving are - looking ahead, moving the eyes, and understanding the bigger picture or scene. The driver must have an alert mind.

Moving the eyes while driving will help to look at all directions and observe for any objects or hindrances at a quick glance and prevent any hitting. Moving the eyes also helps to keep the mind active and alert. Instead, if the eyes are fixed, it will lead to daydream and will keep the mind fixed which will not allow the driver act swiftly in case of any hazard or emergency.

The driver must also move the eyes to look into the vehicle mirrors and keep an eye on vehicles coming behind and on the sides.