Concept:A consular invoice is a customs document certified by the consul of the importing country to verify the value of goods for duty assessment.Explanation:The consular invoice shows the details, quantity, and value of the goods being exported.It is endorsed by the consul of the importing country stationed in the exporter's country.This helps customs authorities in the importing country confirm the true declared value of the goods.As a result, the correct amount of import duty is assessed and paid on the goods.Answer:B. consular invoice