Concept:The document that fully describes the goods sold in a transaction is known as the invoice.
Explanation:An invoice is issued by the seller to the buyer after a sale is completed.
It contains complete details about the goods, such as quantity, price, description, and total cost.
It also shows payment terms and serves as a formal request for payment.
An order form only requests goods, a delivery note only confirms delivery, and a bill of exchange is a payment instrument.
Therefore, the invoice is the document that gives complete information about the goods sold.
Answer:A. invoice