"How dumb can you get!" said Robert. "A colossal waste of time if you ask me. So get going! Scram! Shoo!"
Option B
Step-by-step explanation:
The number devil: A mathematical adventure which is a book who has been written by Hans Magnus. It is a story for children and young adults which talks about exploring Mathematics.
In the story, Robert is a boy who does not like to study math gets to meet a number devil who takes him for the exploration of the world of numbers which was amazing and after that Robert started fascinating about those numbers.