Final answer:
The true statement about major depression is that its symptoms include feelings of hopelessness and difficulty concentrating, among others, and it is a serious illness that cannot be simply 'snapped out of'.
Step-by-step explanation:
The correct statement about major depression is that symptoms include feeling hopeless and difficulty concentrating. Major depression is not simply feeling down after a bad experience; it is a severe and often persistent illness. Symptoms of major depression include a severely depressed mood lasting for more than two weeks, along with difficulty concentrating, changes in sleep and eating patterns, loss of interest in previously enjoyed activities, feelings of worthlessness or guilt, and frequent thoughts of death .
Unlike occasional sadness, people with major depression cannot simply 'snap out of it; it often requires treatment including therapy, medication, or other interventions to manage. Lastly, sadness is indeed a common symptom of depression contrary to the false statement provided.