What did the author's grandmother used to say about teaching children?
A. That it is like writing on sand and can easily be erased. B. That it is like writing on paper and can be erased with an eraser. C. That it is like writing on a rock and is difficult to erase. D. That it is like writing on a chalkboard and can be easily erased.
Correct Answer: C
Explanation
"My own grandmother used to tell us when we were young that what you teach a child is like writing on a rock and when dried, it would be difficult to erase."
