SORU: anlam bakımından parçanın bütünlüğünü bozan cümleyi bulunuz
(I) People who suffer from SAD (Seasonal Affective Disorder) become very depressed during the winter months. (II) Their depression appears to be the result of a decrease in the amount of sunlight they are exposed to. (III)Doctors theorize that decreased sunlight affects the production of melatonin and serotonin. (IV) Indeed, the Scandinavian countries have very high suicide rates. (V) Depression may result from the ensuing imbalance of these two substances in the body