In the broad definition of ergonomics, which of the following disciplines is not included?

The correct response highlights that spectrophotometry is not considered a discipline within the broad definition of ergonomics. Ergonomics primarily focuses on the study of how people interact with their environment, which includes the design of tools, machines, and workspaces to enhance human performance and comfort.

Occupational health relates closely to ergonomics as it involves the well-being of workers, including preventing injuries and illnesses resulting from working conditions. Human factors engineering falls squarely within ergonomics, as it examines how to optimize systems for human use, ensuring safety and efficiency. Sociology, while it may intersect with ergonomic principles by studying groups of people and social behavior, does not directly align with the practical application of ergonomics in the same way that the other disciplines do.

In contrast, spectrophotometry is a scientific method used to measure how much light is absorbed by a sample and does not pertain to the study or application of ergonomics in workplace design or human interactions with their environment. Therefore, identifying spectrophotometry as not being included in the definition of ergonomics is accurate, as it does not focus on human factors, health in the workplace, or the design of tools and systems around human capabilities.