Which professional would most likely be involved in urban planning?

The professional most likely to be involved in urban planning is a design psychologist. Design psychologists focus on how physical environments affect individuals' behavior and well-being. They apply psychological principles to create spaces that promote positive interactions and experiences, making them well-suited for urban planning initiatives. Their work often involves understanding how urban spaces can be designed or modified to improve public health, safety, and community well-being.

In contrast, social psychologists primarily study social behavior and group dynamics but are less focused on the physical aspects of environments. Clinical psychologists are mainly concerned with diagnosing and treating mental health issues, rather than engaging in urban planning. Developmental psychologists explore the psychological growth and changes in individuals over the lifespan, which does not typically intersect with the skills and knowledge required for urban planning projects. Hence, design psychology is the most relevant field related to urban planning among the listed options.