According to the federal odometer law, which action is lawful?

Displaying a false odometer reading to a buyer is lawful under certain conditions specified in the federal odometer law, as long as it is done with the proper disclosure and without intent to defraud. The law requires that the actual mileage of the vehicle be provided to potential buyers, and if the odometer reading is not accurate, sellers are obligated to inform the buyer of the discrepancy. This means that if a seller presents a revised odometer reading that is accompanied by full disclosure of its inaccuracy, this can be lawful since there is no intention to deceive or defraud the buyer.

In contrast, operating a vehicle with a disconnected odometer, altering the odometer, or engaging in any deceitful practices related to misrepresenting the odometer reading are all actions that violate the federal odometer law, which is designed to protect consumers from fraud related to vehicle mileage.