In the NIST RMF, which step is defined as the initial phase to prepare the environment and project scope?

• A. Prepare
• B. Categorize
• C. Select
• D. Implement

Answer: (A)

In this framework, the first action is to get everything ready—the environment, boundaries, and governance for the project. This preparation step is where you define the system, its operating context, the stakeholders, roles, and the overall scope and security approach before any risk assessment or control selection begins. By establishing what you’re protecting, where the system will run, and how decisions will be made, you create a solid foundation for all subsequent steps.

That’s why this option is the best fit: it explicitly represents the initial phase focused on setting up the environment and project scope. The other steps come later in the process: categorizing determines the impact levels for information, selecting chooses which controls to apply, and implementing puts those controls into place.