Urban design principles are intended to:

Urban design principles focus on shaping the physical environment of urban spaces to enhance quality of life for residents. The aim is to create functional, attractive, and sustainable communities that foster interaction, promote well-being, and ensure accessibility. By emphasizing elements such as pedestrian pathways, green spaces, and public amenities, urban design principles help in creating livable environments where people feel comfortable and engaged.

The correct choice reflects the underlying goals of urban planning, which are not only about aesthetics but also about ensuring that urban spaces cater to the needs of their inhabitants. This involves careful consideration of how spaces are utilized and how they contribute to social and economic interactions within the urban fabric. Ultimately, effective urban design can lead to vibrant communities that can support a wide range of activities while also being environmentally conscious.

The other options do not align with the primary intent of urban design. Limiting functionality would contradict the goal of enhancing usability, promoting urban sprawl is contrary to sustainable development practices that aim to contain and manage growth efficiently, and encouraging informal housing development does not typically reflect the structured and methodical approaches that urban design emphasizes for planned communities.