Which of the following is not one of the primary categories of commodities?

Name: Which of the following is not one of the primary categories of commodities?
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Question

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The primary categories of commodities are food and fiber, metals, energy, and chemicals. Wood would fall under the category of "materials," which is not considered one of the primary categories. Gemstones would fall under the category of "precious metals and stones," which would be included in the category of "metals."

Which of the Following Is Not One of the Primary