Answer:
A. The Miller takes his son place on the donkey's back
Step-by-step explanation:
The Miller takes his son place on the donkey's back belongs in the summary because it is an important event caused by the main problem.
The problem is: Miller needs a job and worries about peoples opinion of him.
The answer is not
B: An older couple on power scooters
whizzes by the miller, his son, and their
donkey
or
C: A man complains that the father should
let the boy ride the donkey
or
D:The donkey walks even slower with the son riding on its back.