The answer is: "'You’ve changed lots, Jimmy. I never thought you were so tall by two or three inches.'"
The statement itself contains the evidence. By admitting his awe that Jimmy has changed a lot, it implies that he is surprised at what his friend has become. Primarily due to his appearance. In this statement, he pinpointed the change in his height.
They rebel, they want to take over the farm for themselves. So they throw out their human leader.
I would say the bet answer would be option D "Five-year-olds will be evaluated." This would set the stories setting as a dystopia because no five year old would be evaluated at such a young age and given a job. Tommy was also worried that his creativity, and intelligence would go unnoticed and he would be placed as a coal processor and hoped he would become a scientist or a programmer. Also, remember that a dystopia is a made up world of injustice and suffering.
Hope this helps.
