Which of the following could be an unethical practice in vehicle sales?

Concealing information about known issues is considered an unethical practice in vehicle sales because it undermines the concept of transparency and trust between the dealer and the customer. When a dealer fails to disclose known problems with a vehicle, it misleads the customer regarding the true condition and value of the vehicle, which can lead to financial loss or safety concerns for the buyer. Ethical sales practices prioritize honest communication and full disclosure, enabling customers to make informed decisions. By withholding important information, the seller not only risks legal repercussions but also damages their reputation and trustworthiness in the marketplace.