Final answer:
Agile processes advocate for sustainable development with continuous improvement, ensuring that all stakeholders can maintain a consistent work pace indefinitely.
Step-by-step explanation:
Agile processes promote sustainable development, allowing the sponsors, developers, and users to maintain a constant pace indefinitely. Sustainable development in Agile means that the team focuses on continuous improvement, adapting to changes through iterative cycles, much like a spiral design process, which enhances a product over time. This ensures that development meets current needs without compromising future needs, aligning with the core Agile principle of satisfying the customer through early and continuous delivery of valuable software.