Which state agency regulates all phases of the alcoholic beverage industry in Texas?

The correct answer is A. Texas Alcoholic Beverage Commission (TABC). The TABC is the state agency in Texas that regulates all phases of the alcoholic beverage industry, including issuing permits and licenses, enforcing state laws and regulations, conducting investigations, and educating industry members and the public about responsible alcohol service.

Options B, C, and D are incorrect as there is no agency named Texas Alcohol Regulators (TAR), Division of Alcohol Regulation (DAR), or Texas Liquor Control Board (TLCB) that regulates the alcoholic beverage industry in Texas.