Which of the elements of this scenario represent a flow from a household to a firm? This could be a flow of dollars, inputs, or outputs. Check all that apply.
a. The car wash Rosa receives,
b. Rosa's labor,
c. The $100 Nick spends to purchase medical services from the Medical Clinic,
d. The $375 per week Nick earns working for Spotless Car Wash.

Through the product market, firms sell products and services to households. Resources are necessary for businesses to generate goods and services. Through the resource market, household members work for companies. Businesses then transform those resources into products and services. Every factor of production is owned by households in the circular-flow model of an economy. When businesses buy or rent these production components to use them in the creation of products and services, households benefit financially. As a result of household purchases of products and services, businesses profit. Households provide work to businesses in exchange for pay. Companies exploit that labour to make pizzas, which they then sell to households.

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