Step 1: Understand the terminology of architectural space planning.
Step 1: In building design and hospital planning, space is categorized by its function. The question describes space dedicated to movement.
Step 2: Define "Circulation Space".
Step 2: Circulation space is the area within a building, such as corridors, hallways, lobbies, and stairwells, that is dedicated to facilitating the movement of people and goods from one area to another. The description of "uncluttered movement of personnel and materials" is the primary purpose of circulation space.
Step 3: Eliminate other options.
Step 3: The other terms refer to different types of functional spaces (e.g., primary work areas, secondary support areas) but not the space for movement between them.