What is the Arizona State Land Department responsible for?

The Arizona State Land Department is primarily responsible for managing state trust land, which includes the land granted to Arizona by the federal government upon statehood. The primary purpose of these trust lands is to generate revenue for public schools and other beneficiary institutions. This management involves the leasing, sale, and development of these lands to provide sustainable financial support for educational purposes.

In contrast, the other choices reflect responsibilities that fall under different state departments. For example, managing water resources aligns more with the Arizona Department of Water Resources, while the regulation of state parks and recreation areas is handled by the Arizona State Parks Board. Oversight of transportation infrastructure development pertains to the Arizona Department of Transportation. Thus, the focus of the Arizona State Land Department on state trust land administration distinctly sets it apart as the correct answer for this question.