<prompt> Translate the following text to EnglishMwishowe, inatoa mtazamo wa tathmini juu ya masomo ya kesi, kufafanua na kuamua usahihi wao kwa suala la aina ya tathmini iliyowekwa.  <response>: Finally, it presents an evaluation perspective on case studies, defining them and determining their appropriateness in terms of the type of evaluation question posed. 