The high demand for healthcare workers is related to the aging population that requires additional healthcare and personal assistance, more people with health insurance as a result of the Affordable Care Act, and the aging of the workforce.

The aging population requiring health care and personal assistance

Explanation:

The health is one of the most important factor that might represent the strength of nation. The healthy individuals contribute more in the society then the unhealthy individuals.

The government has started different rules that might improve the health of the patients. The healthcare workers demand has been increased as they provide the proper medicine and improves the health of an individual by taking essential steps. The aged people require more attention towards their health and  needs personal assistance for health maintenance.

Thus, the correct answer is option (1).

i think it's the first one because doctors aren't the ones who get rid of the old needles. most of them time it's not even doctors who give you shots, it's nurses.