The license of a motor vehicle salesman may be revoked/suspended on all grounds EXCEPT:

The correct answer is that the license of a motor vehicle salesman may be revoked or suspended on all grounds except for advertising a salvaged vehicle. This is because while advertising a salvaged vehicle is subject to regulation and may involve specific disclosure requirements, it does not typically stand alone as an offense that would warrant revocation or suspension of a license.

In the context of motor vehicle sales, the other three options—fraudulent sales practices, failure to renew the license, and not completing training requirements—represent legitimate grounds for disciplinary action. Fraudulent sales practices directly harm consumers and undermine the integrity of the sales profession, which regulatory bodies take very seriously. Failure to renew the license is also a direct violation of licensing requirements, indicating that the salesman is not currently authorized to engage in sales activities. Lastly, failing to complete required training reflects a lack of professional competence and knowledge, which could lead to the salesman providing inadequate service to consumers.

Thus, while all these actions can lead to disciplinary measures, advertising a salvaged vehicle, assuming it is done within legal requirements and with proper disclosures, does not inherently jeopardize a salesman's license.