According to many theorists, problems in U. S. health care delivery are rooted in the capitalist economy, which views medicine as a commodity that is produced and sold by the medical-industrial complex.

Conflict Theorists.

Explanation:

Conflict Theory has its roots in the belief of Karl Marx. This theory suggests that the conflict in a society is basically due to conflict between various social classes. This competition occurs because of limited sources available in the environment.

The believers of conflict theory tend to believe that people who are wealthy and powerful will by any means try to maintain their power in the society. And this is done usually by suppressing poor and those who do not have power in the society.

So, it will be conflict theorists believing that the problem in the United States health care is because of the capitalist economy as they view production of medicine only as a commodity.

So, the correct answer is conflict theorists.