Serving and advocating for individuals with developmental and other disabilities so they may have the opportunity to choose and realize their goals. Serving and advocating for individuals with developmental and other disabilities. The mission of the Ridge Area Arc is to promote for all persons in its service area with intellectual and developmental disabilities and other unique abilities, the opportunity to choose and realize their goals of where and how they learn, live, work, and access leisure activities. The Arc will develop and operate programs to implement this mission.