Final answer:
In a legal context, a commission is required to send a notice of a hearing along with a statement of charges at least within a certain timeframe before the hearing.
Step-by-step explanation:
In a legal context, a complaint has been filed against a licensee and the commission has determined that a contested case hearing must be held. In such a situation, it is necessary for the commission to send a notice of the hearing along with a statement of the charges at least. The missing word in the question is 'X' because it is not provided, but it is implied that the commission must send the notice and statement of charges within a reasonable timeframe before the hearing. Please check the specific legal requirements or regulations governing the commission in question to find the exact timeframe for sending the notice and statement of charges.