"The work of artist and scientist Leonardo da Vinci (1452-1519) has an unusual characteristic. His handwriting is a mirror image of normal handwriting."
D. What would Leonardo ask you to practice while writing sentences in a reflection?
He would say that I should take some time and work on my a's.
E. "Explain why the fact about da Vinci in part (a) might have made mirror writing seem natural to him."
Because he was left-handed the way he wrote looked right to him. It was natural to him to write like that.