Which of the following would be best suited for constantly changing environments?

Containers are best suited for constantly changing environments because they encapsulate an application and its dependencies into a portable, isolated unit. This allows for rapid deployment, scaling, and updates without affecting the underlying infrastructure or other applications. Their lightweight nature and consistent runtime environment make them ideal for agile development and continuous integration/continuous deployment (CI/CD) pipelines. RTOS (Real-Time Operating Systems) are designed for time-critical operations and deterministic behavior, not flexibility in changing environments. Embedded systems are specialized computer systems designed for specific functions within a larger system, often with limited resources and fixed functionality. SCADA (Supervisory Control and Data Acquisition) systems are used for industrial control and monitoring, prioritizing stability and reliability over frequent changes.