The Dictionary of Occupational Titles codes occupations according to field and gives reference to

• A. Data, People, and Things
• B. Skills, Knowledge, and Abilities
• C. Tasks, Duties, and Responsibilities
• D. Education, Experience, and Age

Answer: (A)

The key idea here is how the Dictionary of Occupational Titles describes what a job involves. In the DOT, occupations are organized around three broad content areas: data, people, and things. Data refers to information handled or processed on the job, people covers interactions with others such as coworkers, supervisors, or customers, and things includes the physical objects, tools, and equipment used. The DOT provides a reference to these three areas to characterize each occupation, rather than focusing on skills, knowledge, and abilities, or on tasks and duties, or on education and age. That’s why Data, People, and Things is the best match for how the DOT codes occupations.