Which statement best describes a service-based model in the circular economy context?

• A. It monetizes ownership by selling units.
• B. It emphasizes disposal after use.
• C. It focuses on selling a product with no ongoing service components.
• D. It monetizes function through product-as-a-service, promoting ongoing service and durability.

Answer: (D)

In a service-based model within the circular economy, value comes from ongoing access and care rather than from selling a product outright. Product-as-a-service means the provider retains ownership and is responsible for maintenance, repairs, upgrades, and end-of-life management, while customers pay for using the function or service. This setup incentivizes durability, modular design, and easy refurbishment, since keeping the product in use reduces waste and keeps materials circulating. It shifts the business model from a one-time sale to an ongoing relationship focused on performance and longevity, which aligns with keeping resources in use for as long as possible.

The other ideas describe linear approaches: selling units means transferring ownership and encouraging replacement, disposal after use signals wasteful end-of-life behavior, and selling a product with no ongoing service components lacks the continuous care that drives circularity.