1. The problem asks about the most likely risk if Posyandu services for Toddlers, Adolescents, and the Elderly operate separately without coordination. 2. Let's analyze the options: - Services become more focused: While focus is good, lack of coordination can cause gaps and inefficiencies. - Program efficiency increases: Unlikely without coordination. - Stunting prevention is not sustainable: Stunting prevention requires a holistic, coordinated approach across age groups. - Community participation increases: Coordination usually improves participation. - The burden on Posyandu cadres decreases: Possible but may reduce overall effectiveness. 3. The most critical risk is that stunting prevention is not sustainable without coordination. Final answer: Pencegahan stunting tidak berkelanjutan (Stunting prevention is not sustainable).