Final answer:
Income can be realized as property, cash, or services in a market economy, covering assets like real estate and financial investments, direct monetary earnings, and compensation for services rendered.
Step-by-step explanation:
Income can be realized in various forms within a market economy. In fact, income may be realized in the form of property, cash, or services. Each one represents a different aspect of how individuals and businesses perceive and obtain value in financial terms. When we talk about income in the form of property, this can include real estate or financial investment assets like stocks and bonds, which may provide dividends, interest, or capital gains. Cash income is the most straightforward and denotes money received, such as wages, salaries, tips, and commissions that come from labour. Services provided can also be a source of income when you perform work or services for another person or entity in exchange for payment. Therefore, the correct answer is 'd. All of these', as income can indeed be realized in all these forms.