Correct Answer : D Reference: Containers are code execution environments that run within an operating system (for now), sharing and leveraging resources of that operating system. While a VM is a full abstraction of an operating system, a container is a constrained place to run segregated processes while still utilizing the kernel and other capabilities of the base OS.

The code execution environment running within an operating system that shares and uses the resources of the operating system is known as: D. Container A container is a lightweight and isolated runtime environment that runs within an operating system. It provides an isolated execution environment for applications, allowing them to share the underlying operating system's resources efficiently. Containers are an example of operating system-level virtualization, where multiple containers can run on a single host OS. They offer a higher level of abstraction compared to virtual machines and provide a more lightweight and flexible approach to application deployment and management. Containers encapsulate the application code and dependencies, enabling consistent execution across different environments while leveraging the resources of the underlying operating system.