Which entity considers and approves most zone changes on Guam?

The Guam Land Use Commission (GLUC) is the entity responsible for considering and approving most zone changes on Guam. This commission has the authority to review land use proposals and make decisions based on the broader implications of such changes, ensuring they align with the island's land use plans and zoning regulations. The GLUC plays a critical role in managing land use to promote sustainable development and protect the interests of the community.

In contrast, the Guam Planning Authority typically focuses on long-term development plans and comprehensive planning rather than the specific approval of zone changes. The Application Review Committee (ARC) may engage in reviewing applications for different developments, but it does not have the direct authority to approve zone changes. Similarly, while the Department of Lands and Natural Resources is involved in various aspects of land management, it does not specifically handle zoning approvals. Thus, the GLUC's specialized role makes it the correct answer in this context.