Which category of human factors includes being physically unsuited for the job?

Physical limitations pertain to the inherent traits or health conditions that may impede an individual's ability to perform the tasks required of a fire officer effectively. This category emphasizes how an individual's physical state—such as strength, stamina, mobility, and overall health—can impact their performance in demanding environments like firefighting. For example, if an individual has a medical condition that limits their mobility or endurance, they would be at a disadvantage when facing the physical demands of the job.

In contrast, the other categories focus on different aspects of human factors. Mental challenges relate to cognitive abilities and psychological conditions that may affect decision-making and situational awareness. Improper attitude addresses behavioral issues and mindset that can negatively influence teamwork and operational effectiveness. Knowledge and skill are concerned with an individual's training, education, and experience necessary to perform tasks correctly. While these are essential aspects of overall competency in a fire officer role, they do not directly address the physical capacity required for the job.