A Development Environment primarily supports what kind of activities?

A Development Environment primarily supports application design and early development phases. This is focused on creating and modifying applications, allowing developers to test and iterate on their code before it is moved to production environments.

In this environment, the emphasis is on coding, debugging, and experimenting with different functionalities without impacting live systems or actual users. Such environments generally include tools for version control, software development kits (SDKs), and various testing frameworks designed to facilitate the early stages of software development.

This makes the Development Environment distinct from others, such as production environments, which handle live user transactions and critical business operations, or testing environments that focus on final deployment evaluation. Thus, option C reflects the primary purpose of a Development Environment accurately.