Answer:
The correct answer is the last option: Government.
Step-by-step explanation:
To begin with, the federal government of the United States itself is the largest single payer of health care in the country. Only by itself the government achieves to account for more than a quarter of all the country's spending just on the healtcare industry. Therefore that the main entity that is best able to affect and influence in the industry to achieve a change on it is the federal government who can significantly shape and move the market of the healthcare. Moreover, the government can do it also by having the power of implementing policies that tend to favour or not the industry regarding what the leader are looking for.