Final answer:
The superintendent can conduct examinations of an insurer's books and records at any time without prior notice to ensure compliance with regulatory standards. The option (C) is correct.
Step-by-step explanation:
The statement that is true regarding an examination of an insurer's books and records by the superintendent is The superintendent may conduct examinations at any time without prior notice. Regulatory authorities such as the superintendents of insurance have the power to examine an insurer's books, records, and operations to ensure that they comply with legal and regulatory standards.
These examinations are conducted to protect the interests of policyholders and the public and can cover a wide range of time, not limited to just the most recent year. Therefore, option (C) is correct.