Which of the following best describes the significance of the passage below in terms of the theme of intelligence?
'They are taking Boxer to the knacker's!' A cry of horror burst from all the animals. At this moment, the man on the box whipped up his horses and the van moved out of the yard at a smart trot. All the animals followed, crying out at the tops of their voices... And just at this moment, as though he had heard the uproar outside, Boxer's face, the white stripe down his nose, appeared at the small window at the back of the van.