In economic terms, what does revenue encompass?

The concept of revenue primarily refers to the income that a business earns from its core operations, specifically through the sale of goods and services. This definition aligns directly with the correct answer. Revenue does not account for expenses, which are subtracted from income to evaluate profitability, nor does it consider net profit, which is revenue left after all expenses and taxes are deducted.

Furthermore, while industry-specific income may encompass various forms of revenue, the term is typically restricted to the amounts generated from operational activities, ignoring other sources like loans or investments. Therefore, the income derived strictly from core business activities is what revenue entails, making this choice the most accurate representation of the term in economic terms.