Community psychologists intervene at the primary level when they design prevention programs for potential problems before the problems actually occur design prevention programs for potential problems before the problems actually occur A deinstitutionalize individuals through the use of halfway houses deinstitutionalize individuals through the use of halfway houses B treat currently existing problems before they reach epidemic proportions treat currently existing problems before they reach epidemic proportions C treat currently existing problems only after they have reached epidemic proportions treat currently existing problems only after they have reached epidemic proportions D treat a disease in an attempt to slow the spread of it