What discipline focuses on arranging the environment to fit the person?

The correct answer is ergonomics, which is the discipline concerned with designing and arranging the workspace and equipment in a way that fits the physiological and psychological needs of the individual using them. This field involves applying principles from various sciences, including biomechanics, industrial design, and psychology, to enhance human interaction with systems and to improve comfort, efficiency, and safety in the workplace.

By focusing on how to tailor an environment to suit the person, ergonomics aims to reduce the risk of work-related injuries, enhance productivity, and create a safer work environment. For instance, it involves adjusting workstation heights, designing tools that minimize strain, and creating workspace layouts that promote good posture and reduce unnecessary movements.

Other options represent different concepts unrelated to tailoring the environment specifically to the individual. Work practice controls refer to changes in the way tasks are performed to reduce exposure to hazards. Conditioning typically relates to training or physical preparation to enhance performance in specific activities rather than the arrangement of the environment itself. The "none of the above" option is not applicable since ergonomics directly addresses the question's focus.