Final answer:
The regulations associated with OBRA were developed by the U.S. Congress. OBRA was enacted in 1987 and included various provisions related to healthcare. The Department of Health and Human Services and other agencies play a role in implementing and enforcing these regulations. Option a.
Step-by-step explanation:
The regulations associated with OBRA (Omnibus Budget Reconciliation Act) were developed by the U.S. Congress. OBRA was enacted by Congress in 1987 and included various provisions related to healthcare, such as nursing home standards, long-term care facilities, and Medicare and Medicaid reforms. The Department of Health and Human Services (HHS) and other agencies play a role in implementing and enforcing these regulations, but the primary responsibility lies with the Congress.