Which Texas official has regulatory authority over land surveying practices?

The correct answer is the Attorney General, as this office holds regulatory authority over land surveying practices in Texas through the Texas Board of Professional Engineers and Land Surveyors. The Attorney General provides legal oversight and ensures that surveying practices conform to the state's laws and regulations, thereby promoting professional standards within the discipline.

In the context of understanding regulatory authority, the other offices mentioned—such as the State Comptroller, Land Commissioner, and Secretary of State—have different responsibilities. The State Comptroller is primarily focused on financial matters and taxation, the Land Commissioner manages state lands and resources, and the Secretary of State handles various administrative roles including business registrations and elections. None of these roles are directly involved in the regulation of land surveying practices, which is why the Attorney General is the correct choice for this particular question.