How do subsistence and commercial farming differ in purpose and scale?

• A. Use large-scale machinery; commercial uses wind-powered tools
• B. Subsistence farming primarily aims to feed the farmer's family with small-scale output; commercial aims to sell in markets
• C. Occur only in developed economies; commercial only in developing economies
• D. Rely on cash crops; commercial relies on subsistence crops

Answer: (B)

The main idea is that farming differs in why it’s done and how big it is. Subsistence farming focuses on meeting the farmer’s family needs, producing a small amount of food and typically with a variety of crops so the family is fed with little or no surplus sold. Commercial farming, on the other hand, is organized to earn income by selling crops in markets, usually on a large scale with specialization, more capital, and greater use of machinery and inputs to maximize production for profit. This helps explain why subsistence farming is common in areas with limited market access, while commercial farming tends to thrive where markets, infrastructure, and capital are available. The other descriptions don’t capture this essential contrast—it's not primarily about wind versus machinery, not restricted to one type of economy, and not defined simply by growing cash crops versus subsistence crops.