The question asks for a planning approach that emphasizes community participation and collaboration, especially in urban renewal.
Let's define the planning approaches:
(a) Top-down planning (Rational-comprehensive planning in its traditional form): Decisions are made by central authorities or experts, and then implemented downwards. Community participation is often limited to consultation at later stages, if at all. This approach can be efficient but may lack local relevance and public support.
(b) Market-oriented planning (Laissez-faire approach / Neoliberal planning): Relies primarily on market forces (supply and demand) to shape urban development, with minimal government intervention. Community participation might occur through market mechanisms or advocacy, but is not a central tenet of the planning philosophy itself.
(c) Comprehensive planning (Rational planning): A systematic approach that involves setting goals, collecting data, analyzing alternatives, and developing a long-range plan for guiding future development. While modern comprehensive planning often incorporates public participation, the term itself doesn't inherently emphasize it as the *primary* driver in the way a "bottom-up" approach does.
(d) Bottom-up planning (Participatory planning / Community-based planning / Advocacy planning / Collaborative planning): This approach emphasizes the active involvement of local communities, residents, and stakeholders in all stages of the planning process, from identifying needs and setting goals to developing and implementing solutions. It values local knowledge, empowers communities, and aims for plans that are responsive to local needs and have strong public support and ownership. Collaboration between planners, officials, and the community is key. This perfectly fits the description "emphasizes community participation and collaboration."
In the context of urban renewal (redeveloping or improving existing urban areas), a bottom-up, participatory approach is increasingly recognized as crucial for ensuring that renewal projects meet the needs of existing residents, minimize displacement, preserve community character where desired, and achieve sustainable and equitable outcomes.
Therefore, Bottom-up planning is the approach that emphasizes community participation and collaboration.
\[ \boxed{\text{Bottom-up planning}} \]