The correct answer would be, 10 days before.
The commissioner believes that a licensee has violated an insurance regulation and decides to conduct a hearing. The licensee must get a written notice from the commissioner office 10 days before.
Explanation:
A commissioner is a person who is appointed as a supreme authority in an area. He is the head of the Metropolitan Police.
So whenever there is an act of crime or any violation happens in his area, he is the one who can take an action against it according to the laws. So whenever he will take an action, he has to send a notice before the hearing.
So when a commissioner believes that an insurance licensee has violated the regulation, and he decided to conduct a hearing, he must send a notice to the licensee at least 10 days prior to the hearing date.
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