which is a symptom of depression?\n○ planning for the future\n○ increased concentration\n○ decreased…

Brief Explanations:

Depression is a mental health condition. Symptoms of depression often include changes in sleep patterns (like insomnia or excessive sleeping), loss of interest, low mood, etc. "Planning for the future" is not a symptom (depression often causes difficulty in future - oriented thinking). "Increased concentration" is not typical (depression usually causes difficulty concentrating). "Decreased anger" is not a common symptom. Sleep disturbance (like trouble falling asleep, staying asleep, or oversleeping) is a well - known symptom of depression.

Answer:

sleep disturbance