reason:
Assisting in preventing further disability is not a primary focus. While prevention is important, once a developmental disability is diagnosed, the focus shifts toward optimizing the child's existing abilities and enhancing her quality of life.

reason:
Ensuring her participation in group activities is not a primary focus. Participation in group activities is valuable for socialization and development, but it is one aspect of care and may not address the full range of the child's needs.

reason:
Teach her social skills is not a primary focus. Teaching social skills is important, but it is a specific aspect of her overall development. The primary focus should encompass her broader potential and capabilities.

reason:
Help her achieve her maximum potential is appropriate. The primary focus of treatment for a child with a developmental disability should be to help her achieve her maximum potential. This approach emphasizes providing individualized care and interventions that support the child's overall development and well-being. It recognizes that each child's abilities and needs are unique and aims to promote her growth, skills, and abilities to the fullest extent possible.