Concept:A warehouse keeper issues a document to confirm that goods have been safely stored in the warehouse.Explanation:A dock warrant is the official receipt given by a warehouse keeper to the trader who deposits goods in the store.It acts as proof that the goods are held in the warehouse.It also shows that the holder has the right to claim the goods when needed.The other options, such as mate receipt, bill of sight, and ship manifest, are used at different stages of shipping and customs clearance.Answer:D. dock warrant