TheAICP Code of Ethics(2022), Section A, Principle 1(b), states, “We shall provide timely, adequate, clear, and accurate information on planning issues,” and Section B, Rule 3 prohibits “knowingly providing inaccurate information.” The planner’s disagreement stems from the project’s inconsistency with the comprehensive plan, a valid concern. Option C (meet with the director and discuss problems) is the first step, as it addresses the issue professionally within the chain of command, ensuring accurate information is presented. Option A (letter to the newspaper) and D (supplying information to community leaders) violate confidentiality under Rule 10, which prohibits public disclosure without authorization. Option B (calling commission members) bypasses the director and may be seen as unprofessional. TheCPC Study Manual(2024) states, “Planners should first address ethical concerns, like plan inconsistencies, with their supervisor to ensure accurate information is provided,” supporting option C.