You are presented with the question "When the seasons change from the summer to the fall, symptoms of what will sometimes worsen?" and the following answer choices: 
- vitamin D excess
 - hypothyroidism
 - Dehydration
 - direct damage to the lungs
 - Thanksgiving
 - green
 - Abnormal cell growth
 - depressive illnesses

Now knowing that when the seasons change from the summer to the fall , the amount of daylight will decrease and symptoms of their depressive illness are worsened by decreased daylight, choose the best answer.


 

        depressive illnesses 