Final answer:
An automobile in a parking structure for a customer would be insured under garage keepers coverage, which is designed for businesses holding customer vehicles.
Step-by-step explanation:
An automobile kept for a customer in a parking structure would be covered by garage keepers coverage. This insurance is specifically designed for businesses that operate service centers or parking facilities and take possession of customers' vehicles. The coverage provides protection against damages to customer vehicles while they are under the care of the business, such as during repairs or parking services. Alternatives like inland marine, business personal property, or commercial auto insurance would not adequately cover this scenario. Inland marine typically addresses property in transit, business personal property covers the insured's own business contents, and commercial auto insurance covers business-owned vehicles.