Final answer:
A superintendent may refuse to renew a license if the licensee's commissions from controlled business exceed 10%, but the time frame is not specified in the question and would depend on jurisdiction-specific regulations.
Step-by-step explanation:
The question pertains to the regulations concerning license renewal for professionals in certain sectors, such as insurance. A superintendent may have the authority to refuse the renewal of a license if the licensee has engaged in a practice known as controlled business, where a significant portion of their commissions is derived from sources that they have influence over, such as their own policies or those of family and close associates. If a licensee receives more than 10% of the aggregate commissions from controlled business, the superintendent has grounds to refuse license renewal. However, the specific time frame over which this 10% is calculated is not specified in the question and might be set forth in the relevant laws or regulations governing licensing in that jurisdiction.