All of them do and sadly always will ?!
Okay, I don't exactly but I'm pretty sure it's "hair becomes full of static electricity".
God Bless!!
For Number 1, your answer would be B. Have him go at his own speed and not for the win.
For Number 2, It would be D. The girl would get an Anxiety Attack.
Number 3, is not fully filled out in question form.
Any surgical incision into the skull, esp to expose the brain for neurosurgery.
The answer is B- helped them study the anatomy.