Passed in 2010, this law requires that firms with 50 or more employees provide health care insurance for their workers or pay a fine if the government must subsidize health care coverage.

a. Health Insurance Portability Accountability Act
b. Patient Protection and Affordable Care Act
c. Consolidated Omnibus Budget Reconciliation Act
d. Occupational Safety and Health Act

The correct answer is B. The law that was passed in 2010, requiring that firms with 50 or more employees provide health care insurance for their workers or pay a fine if the government must subsidize health care coverage is the Patient Protection and Affordable Care Act.

Explanation:

The Patient Protection and Affordable Care Act, informally referred to as Obamacare, is a federal law in the United States that was signed March 23, 2010 by President Barack Obama as part of a healthcare reform in the United States and the expansion of Medicaid.

The essence of Obamacare is basically a federal regulatory law that is intended to control the prices of health plans and also to expand public and private insurance plans to most of the US population. According to the government, the law should improve the quality of service and also reduce the overall cost of health (for each American individual), while ensuring that more people have access to health.  

The law requires the purchase of insurance and the provision of basic services, with serious illness interns, regardless of sex or other conditions. In that sense, Obama's health care reform guarantees a reduction in the cost of purchasing insurance, among other things.