Neo-traditional design principles, often associated with New Urbanism, emphasize walkable, mixed-use communities with traditional architecture and interconnected streets. Seaside, FL (option B), developed in the 1980s, is a quintessential example, designed by Andrés Duany andElizabeth Plater-Zyberk to embody these principles with its pedestrian-friendly layout and mixed uses. The APA’sAICP Certification Exam Content Outline(2022), under “Fundamental Planning Knowledge,” states, “Seaside, FL, is a leading example of neo-traditional design, showcasing walkability, mixed uses, and traditional architecture.” Reston, VA (A) and Columbia, MD (C) are planned communities but focus more on modernist principles. Aurora, IL (D) is a traditional city, not neo-traditional. TheCPC Study Manual(2024) confirms, “Seaside, FL, is the most representative of neo-traditional design principles,” supporting option B.