Which type of policy should Anna's Rare Books purchase to cover the shipment of valuable books?

To cover the shipment of valuable books, the most suitable option is a Trip Transit Policy. This type of policy specifically provides coverage for goods while they are being transported from one location to another. It is designed to protect against risks such as theft, loss, or damage during the transit process, making it ideal for businesses like Anna's Rare Books that need to ensure their valuable inventory is covered while in transit.

The other options do not adequately address the specific needs of covering the shipment of books. For example, a Builder’s Risk Policy is intended for buildings and structures under construction, focusing on coverage for physical property at a construction site. Marine Cargo Policies can also offer coverage for goods transported over water, but a Trip Transit Policy is more applicable for land transit scenarios. A Commercial Auto Policy provides coverage for vehicles used for business purposes but does not offer protection for the goods being transported. Thus, the Trip Transit Policy is the most appropriate choice for Anna's needs.