Which of the following is a characteristic of variable costs?

Variable costs are directly tied to the level of production or activity within a business. This means that as production increases, variable costs rise correspondingly, and as production decreases, these costs drop. For example, raw materials, labor costs for hourly workers, and utility costs that vary with production can all be categorized as variable costs because they fluctuate based on the company's output.

This characteristic contrasts with fixed costs, which do not change with production levels and remain constant regardless of how many goods or services are produced. Hence, the notion that variable costs change in line with production levels is fundamental to understanding cost behavior in the context of business operations.