The study of human factors related to things people use.Multiple ChoiceHeadgearRSITechnical studyErgonomics

The correct answer to the question is Ergonomics.

Explanation:

Ergonomics is the scientific discipline that studies how people interact with the elements of a system, including the design of tools, systems, and tasks to optimize human well-being and overall system performance. It focuses on understanding human abilities and limitations to improve safety, comfort, and productivity.

In contrast, the other options do not directly relate to this specific study:

• Headgear typically refers to a type of equipment rather than a field of study.
• RSI (Repetitive Strain Injury) often results from poor ergonomics but is a medical condition, not a discipline.
• Technical study is a broad term and does not pertain specifically to human factors in design.

Therefore, in the context of the question, ergonomics is the accurate and relevant choice.