In general usage, what is a margin?

• A. A border or edge
• B. The difference between the cost of production of a good and the amount at which it is sold
• C. Not important
• D. To ripen

Answer: (A)

Margin in everyday language refers to the border or edge of something—the space around its outer boundary. This sense is what people most often mean when they use the word in daily talk, like talking about the margins of a page or the edge of a field. The other meanings are more specialized: the difference between production cost and selling price is a business-specific sense called a profit margin; to ripen has no connection to the typical idea of a border or edge. So, for general usage, the border/edge idea best fits how the term is used in everyday speech.