Metromedia, Inc. v. San Diego(1981) examined a city ordinance banning off-site billboards, raising questions about freedom of speech under the First Amendment, as billboards involve commercial speech. The Supreme Court ruled that while some restrictions were permissible, the ordinance was overly broad. Option C (freedom of speech) is correct. The APA’sAICP Certification Exam Content Outline(2022), under “Fundamental Planning Knowledge,” states, “Metromedia, Inc. v. San Diego(1981) addressed freedom of speech in the context of billboard regulations.” Option A (aesthetics) was a secondary concern. Option B (obscenity) is unrelated. Option D (due process) was not the focus. TheCPC Study Manual(2024) confirms, “Metromediaexamined freedom of speech in development regulation,” supporting option C.