Final answer:
The subject of this question is Health, and it is about accidents in the workplace causing disabilities. Head and traumatic brain injuries are major causes of disability, with approximately 20% of all disabling accidents on the job involving head injuries.
Step-by-step explanation:
The subject of this question is Health. According to the provided information, the question is related to accidents in the workplace causing disabilities. One example is head and traumatic brain injuries, which are major causes of immediate death and disability. It is estimated that 20% of all disabling accidents on the job involve head injuries.