Final answer:
According to the circular flow model, households can obtain income by selling their resources to firms.
Step-by-step explanation:
The subject of this question is Social Studies.
According to the circular flow model, households can obtain the income they need to buy the goods they want by selling their resources. In the circular flow diagram, firms produce goods and services, which they sell to households in return for revenues. Households, in turn, sell their labor as workers to firms in exchange for wages, salaries, and benefits.