Dialogue:

W: Doctor, I haven't been able to get enough sleep lately, and I'm too tired to concentrate in class.

M: Well, you know, spending too much time indoors with all that artificial lighting can do that to you. Your body loses track of whether it's day or night.

Question: What does the man imply? 

- The woman is making too big a fuss about her condition.

- Fatigue is a typical symptom of lack of exercise.

- The woman should spend more time outdoors.


The woman should spend more time outdoors.