There are many signs, this may help you with your answer https://www.drugabuse.gov/publications/principles-adolescent-substance-use-disorder-treatment-resear...
Options? and I think its skeletal system.
Answer:. d
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Explanation:
How are you?
C. should be your answer.
Hope This Helps!!
We know fatigue can cause drowsiness and so can the other so my best guess is drowsiness