Trade sources in interior design primarily include which option?

• A. Regulatory agencies
• B. Manufacturers
• C. Suppliers
• D. Tradespeople

Answer: (B)

Trade sources refer to the channels designers use to obtain products through professional networks. The primary source for product lines is manufacturers—they create the goods, control the materials and finishes, and provide specifications, warranties, catalogs, and often customization options. Designers rely on manufacturers to confirm performance, availability, and fit for a project. While suppliers and distributors help move those lines to showrooms and to the project site, and tradespeople handle fabrication and installation, regulatory agencies set rules rather than supply products. So manufacturers are the best answer because they are the main origin of the items designers source in the trade.