Final answer:
The "Big Three" in Texas policy making refers to the Texas Governor, Texas Lieutenant Governor, and the Speaker of the Texas House, omitting the Chief Justice of the Texas Supreme Court, who is not part of this informal power trio.
Step-by-step explanation:
The individual not listed among the "Big Three" in Texas policy making is a. Chief Justice of the Texas Supreme Court.
The "Big Three" typically refers to the three most powerful figures in Texas's state government, which are the Texas Governor, the Texas Lieutenant Governor, and the Speaker of the Texas House. Each of these officials holds significant sway in the legislative process. Notably, the Texas Lieutenant Governor is often considered the most powerful elected official in the state due to their executive and legislative duties, including presiding over the Senate and influencing the passage of legislation through committee assignments. The positions originally included the Texas Governor, the Speaker of the Texas House, and the Lieutenant Governor. However, the Chief Justice of the Texas Supreme Court was not listed among the "Big Three".