Answer:
A salesperson's access to customer information should extend only to what is necessary to perform his or her duties.
Explanation:
In accessing information in an organisation, user rights should be created to limit the amount of information an individual can access. This can also provide relevant information to a person to do their jobs.
For example a cashier should not have access to the audit reports of an organisation. It does not have relevance to their job.
So in this scenario a good control is when a salesperson's access to customer information extend only to what is necessary to perform his or her duties.