Constitutional amendments impact planning through legal principles. The First Amendment (A) affects planning via free speech (e.g., sign regulations). The Fourth Amendment (C) relates to property searches (e.g., code enforcement). The Fourteenth Amendment (D) ensures due process and equal protection in zoning and land use decisions. The Second Amendment (B), concerning the right to bear arms, has no direct relevance to planning practice. The APA’sAICP Certification Exam Content Outline(2022), under “Fundamental Planning Knowledge,” states, “The First, Fourth, and Fourteenth Amendments are significant to planning, but the Second Amendment has no direct application.” TheCPC Study Manual(2024) confirms, “The Second Amendment is not relevant to planning, unlike the First, Fourth, and Fourteenth,” supporting option B.