Which of the following are suggested for older drivers to maintain safe driving habits?

• Consult with a doctor about an exercise program to maintain the flexibility and strength needed for safe driving.
• Avoid wearing sunglasses in dim or dark conditions to improve vision.
• Get regular medical and eye exams and adjust their vehicles as necessary.
• All of the above.
  Explanation:

  "Older drivers should: 1. Get regular medical and eye exams to identify physical and mental conditions that may affect driving. 2. Consult a doctor about an exercise program to maintain the flexibility and strength needed for safe driving. 3. Make vehicle adjustments as necessary. If it becomes difficult to turn the steering wheel, get a steering knob. If you have difficulty turning your head to check blind spots, get a larger side mirror. 4. Avoid wearing sunglasses in dim or dark conditions."