What can excessive air pressure in the tank cause?

Answer: B — Ruptured hoses and brake system failure

Excessive air pressure in the tank can lead to ruptured hoses and brake system failure because air brake systems are designed to operate within specific pressure ranges for safety and efficiency. When pressure exceeds these limits, it can cause hoses, fittings, and other components to fail due to stress and strain. This can result in air leaks, loss of braking power, and potentially dangerous situations while operating a vehicle. A well-maintained air brake system must have pressure that is carefully monitored and maintained to prevent such failures.