What is the definition of visual acuity?
Answer: D — The ability to see things clearly near and far away
Visual acuity refers to the clarity or sharpness of vision at various distances. It is the ability to see things clearly both up close and far away. This is an essential aspect of good eyesight and is crucial for safe driving, as it allows drivers to see road signs, other vehicles, pedestrians, and potential hazards clearly and accurately. Therefore, option D is the correct definition of visual acuity.