Final answer:
Writing advertisements for insurance companies does not require a certificate of authority or license, as it doesn't involve direct handling of insurance products or advising on insurance matters.
Step-by-step explanation:
The job that does NOT require a certificate of authority or license is writing advertisements for insurance companies. An occupational license is typically required for jobs that involve the direct sale or management of insurance products, such as delivering insurance contracts, collecting insurance premiums, and providing insurance to entities. These activities involve working with a risk group and potentially handling service contracts or warranties, which necessitate a certain level of expertise and trustworthiness that a license can signify. Writing advertisements, however, generally does not require handling the products directly or advising customers on insurance matters, hence no occupational license is needed for that role.