Households are essential in the circular flow of goods because they purchase products from businesses, providing necessary revenue. They also supply resources, making them a pivotal force in the economy. Thus, they play a crucial role in maintaining the overall economic flow. ;
Households are crucial in the circular flow of goods because they buy products from businesses, which provides the necessary revenue for the economy. This relationship fosters a continuous economic cycle where consumption drives production. Thus, the correct choice is option D: households buy the goods sold at product markets.
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