Subdivision regulations govern the division of land into lots, focusing on infrastructure and layout. Option II (protection against flooding and erosion) is a key concern, as regulations require proper site design to mitigate these risks (e.g., stormwater management). Option III (consistency with public facilities) ensures that new subdivisions align with infrastructure like roads and utilities. Option I (design of buildings) is typically regulated by building codes, not subdivision regulations. The APA’s AICP Certification Exam Content Outline (2022), under “Plan and Policy Development,” states, “Subdivision regulations address site layout, including flood protection and alignment with public facilities, but not building design.” The CPC Study Manual (2024) confirms, “Subdivision regulations focus on flood and erosion control and ensuring infrastructure compatibility, not building design,” supporting option C (II and III only).