What does a bill of materials (BOM) include?

• A. A schedule for delivering materials to customers.
• B. A financial expense report for production.
• C. List of raw materials, components, and assemblies required to produce a finished product.
• D. A description of packaging guidelines.

Answer: (C)

A bill of materials lists every part, material, and subassembly needed to manufacture a finished product, with the quantities and often the part numbers required. This focused catalog shows the exact structure of the product, from raw materials to individual components and how subassemblies nest into higher-level assemblies, so planning, purchasing, and manufacturing can be coordinated accurately. For example, making a bicycle would require items like the frame, fork, wheels, brakes, and handlebars, plus subassemblies such as a wheel assembly or brake assembly, each with the specific quantities needed for one unit. This is why the bill of materials is the best description: it precisely enumerates what is needed to build the product, rather than detailing delivery schedules, costs, or packaging guidelines.