An employee repeatedly arrives late, neglects assigned air-traffic clerical duties, and ignores direct supervisor guidance, without any unlawful gain. Under an ethics-and-conduct framework, this behavior primarily violates which duty?

1. The duties of diligence, discipline, and assiduity (professional postura) owed in the performance of one's function
2. The duty of confidentiality regarding state secrets
3. The duty to avoid conflicts of interest
4. The duty of political neutrality in elections