Final answer:
On a trip, you should regularly check watch gauges, use your senses, and check critical items when you stop. The correct answer is Option D.
Step-by-step explanation:
While on a trip, it is important to regularly check:
- Watch gauges: If you are driving a vehicle, monitor the gauges on the dashboard to ensure that everything is functioning properly, such as fuel level, temperature, and oil pressure.
- Use your senses: Pay attention to any unusual sounds, smells, or vibrations that could indicate a problem with the vehicle.
- Check critical items when you stop: When you take breaks during your trip, inspect critical items like tires, brakes, and fluid levels to make sure they are in good condition.
Therefore, the correct answer is Option D: All of the above.