Final answer:
A broker would need to examine the Bill of Lading and Invoice to determine who has insurable interest in a specific shipment as these documents contain information about the cargo and detail the sale transaction.
Step-by-step explanation:
To determine who has insurable interest in a specific shipment, a broker would need to examine the Bill of Lading and Invoice. The Bill of Lading is a document issued by a carrier to acknowledge receipt of cargo for shipment, which includes the terms of the contract of carriage and serves as a document of title for the goods.
The Invoice, meanwhile, details the sale transaction and includes information such as the description, quantity, and cost of goods, as well as the parties involved. These documents provide evidence as to who bears the risk of loss for the goods in transit and therefore who holds the insurable interest.