Choose the correct ending for each main-idea statement according to the text.
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| 1 |  |  Joshua starts feeling depressed and irritable in the winter because __. |
|  | A) | he gets little work done |
|  | B) | he is a graduate student in philosophy |
|  | C) | he suffers from Seasonal Affective Disorder |
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| 2 |  |  Seasonal Affective Disorder, or SAD, is a condition that researchers believe affects people during the winter months. Scientists believe it is caused by __. |
|  | A) | breathing, heartbeat, metabolism, and hormone release |
|  | B) | lack of sunlight and a biochemical imbalance in the brain |
|  | C) | moodiness, irritability, loss of energy, increased appetite, difficulty concentrating, and sleepiness |
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| 3 |  |  Humans have probably struggled with SAD since __. |
|  | A) | 1984 |
|  | B) | December |
|  | C) | ancient times |
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| 4 |  |  People who suffer from SAD can __ to feel better. |
|  | A) | do light therapy |
|  | B) | eat carbohydrates |
|  | C) | take antidepressant drugs |
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