Final answer:
In standard Commercial Auto policies, diminution of value is generally not covered, as these policies pay for repairs but not the resulting loss in resale value after an accident.
Step-by-step explanation:
Under a Commercial Auto policy regarding physical damage, the question pertains to diminution of value, which is the loss in value of a vehicle after it has been involved in an accident and subsequently repaired. Generally, standard Commercial Auto policies do not cover diminution of value claims; these policies are designed to pay for the repairs to bring the vehicle back to its pre-accident functional state but do not typically address the associated loss in resale value that could result from the vehicle having a history of damage. However, some insurers may offer this coverage under a separate endorsement for an additional premium.