Concept:An import order may either name the supplier or leave the choice to the agent.Explanation:An open indent allows the importer's overseas agent to buy goods from any manufacturer.It does not specify a particular producer or brand.A closed indent, however, names the manufacturer or brand to be used.A consular invoice and freight note are shipping and customs documents, not purchase orders.Since the document gives a freehand to obtain goods from any manufacturer, it is an open indent.Answer:C. an open indent