Which action must NOT be taken by a provider who is ceasing to do business?

When a provider is ceasing to do business, the action of providing a refund is not a mandatory requirement and thus is the correct answer. In general, the obligation to issue refunds depends on the individual circumstances of the contracts and transactions that have taken place. Providers often have the right to conclude their business operations without being required to refund all payments, especially if services have been rendered in accordance with the agreements made with clients.

On the other hand, notifying the state board is a regulatory requirement that ensures compliance with state laws, allowing the board to maintain oversight of the provider's operations and to update its records accordingly. Closing all contracts is important for formal closure of business activities and preventing any unfulfilled obligations, which could lead to legal issues or claims. Selling remaining assets may be necessary to settle debts or to conclude financial obligations before officially terminating the business.

Therefore, while the other actions may be mandated by legal and procedural requirements, providing a refund does not fall under a necessary obligation for a provider who is ceasing operations.