Final answer:
If the service line of a vehicle's brake system is loose or damaged, it can result in a serious leak during braking, increased stopping distance, and draining of the air tanks. Hence, the correct answer is D. all of the above.
Step-by-step explanation:
If your service line is loose or damaged, what are the consequences?
When the service line of a vehicle, specifically the brake system, is loose or damaged, it can lead to several issues:
You may experience a serious leak in the brake system when you apply the brakes.
The stopping distance of the vehicle can increase, as the effectiveness of the brake system is compromised.
It is possible to drain out the air tanks, as the compressed air can escape, reducing the pressure needed for proper brake operation.
Therefore, the correct answer is D. all of the above. It's important to maintain the brake system in good condition to ensure safety on the road. A loose or damaged service line can be dangerous because it affects the brake system's ability to generate the necessary pressure to bring the vehicle to a stop effectively.