Adequate highways, land-use controls, and park facilities are usually designed within the context of a ______ plan.

The correct answer is a regional plan because regional planning focuses on coordinating various land uses, infrastructure, and resources across a larger area or multiple jurisdictions. It integrates considerations such as highways, land-use controls, and park facilities to ensure cohesive development and sustainability.

In regional planning, the emphasis is on addressing the needs and impacts that transcend local boundaries, making it essential for managing growth, transportation networks, environmental issues, and public services efficiently. This approach allows planners to create unified strategies that align with broader economic, social, and environmental goals.

While national plans can set overarching guidelines, and county or metropolitan plans focus on more localized issues, the regional plan serves as the connecting framework for comprehensive development across larger geographical areas, ensuring that multiple communities can coordinate their planning efforts effectively.