1. The problem asks which UKBM characteristic is not met when a Posyandu is inactive due to lack of participation from cadres and the community. 2. UKBM characteristics include: - Berbasis kebutuhan (Based on needs): addressing community needs. - Didukung fasilitas kesehatan (Supported by health facilities): access to health infrastructure. - Bersifat berkelanjutan (Sustainable): ability to continue operating long-term. - Memanfaatkan sumber daya lokal (Utilizing local resources): using available local resources. - Dikelola oleh tenaga kesehatan (Managed by health personnel): having trained staff. 3. Since the Posyandu is inactive due to lack of participation, the key issue is sustainability, which depends on continuous community and cadre involvement. 4. Therefore, the characteristic not met is **Bersifat berkelanjutan (Sustainable)** because without participation, the program cannot continue effectively. Final answer: Bersifat berkelanjutan (Sustainable)