Which legislative body changed the Payment of Benefits?

The correct answer indicates that the legislative authority refers to the overall legislative framework responsible for enacting laws regarding the Payment of Benefits, which can encompass both state and federal levels. In this context, "legislative authority" generally signifies the body or bodies empowered to create and modify legislation, which includes adjustments to policies related to benefits.

The Payment of Benefits can be influenced by various levels of government, including state legislatures like the Michigan Senate and House of Representatives, as well as the federal legislative body, the U.S. Congress. However, the term "legislative authority" encompasses the collective capability and responsibility for law-making in this area, making it the more comprehensive choice.

The other options represent specific legislative bodies that have the authority to change laws and policies, but they do not capture the broader legislative responsibility implied by "legislative authority". This highlights the importance of recognizing how different legislative entities play a role in shaping regulations and benefits at both state and federal levels.