Answer:
The answer is: A) Economists use the terms firm, company, and business interchangeably.
Explanation:
Though they aren´t exactly the same, they are quite similar, so economists use them as synonyms.
A firm is a company that sells products or services for a profit.
A company is a legal entity (separate from the owner) that operates a business. It can be a sole proprietorship, a partnership, or a corporation.
A business is an organization that trades products or services for money.