Which of the following is among the impediments to government action on health care? (Points : 1)

Frequency of divided government and the resulting decentralization of the legislative process
Magnitude of disagreement between citizens and the insurance industry
Ideological opposition to reform among physicians
Existing Supreme Court precedents that restrict possible reforms

Magnitude of disagreement between citizens and the insurance industry

To determine which of the options is among the impediments to government action on health care, we need to understand the meaning of each option and then analyze them.

1. Frequency of divided government and the resulting decentralization of the legislative process: This refers to a situation where different political parties control different branches of the government, leading to potential gridlock and difficulty passing legislation.

2. Magnitude of disagreement between citizens and the insurance industry: This option suggests that conflicting views between citizens and the insurance industry can hinder government action on health care reform.

3. Ideological opposition to reform among physicians: This option highlights the potential resistance from physicians due to different ideological reasons, which could impede government action.

4. Existing Supreme Court precedents that restrict possible reforms: This option refers to previous court rulings that place limitations on what reforms the government can implement in the healthcare sector.

Now, to identify the correct option, we need to assess which one is considered an impediment to government action on health care. Considering the question and the context of health care reform, the correct option is "Existing Supreme Court precedents that restrict possible reforms." Supreme Court decisions can have a significant impact on the limitations and possibilities for health care reform.

Therefore, the correct answer is: Existing Supreme Court precedents that restrict possible reforms.