Answer:
morning walk According to me
All of the above is the right awnser
If by inside, you mean staying indoors, then this is false. The average hours of sleep that people should get is between 7-8 hours. That would be 7/24 * 100 = about 30%. People must at least stay inside to sleep.
I hope I was able to answer your question. Have a good day.
I believe the answer is (B) Skeletal.