Because they felt like it wasn't correct, they felt that as if they were been treating humans as if they were their own pets or animals just to be experimented on.
"<span>Humanists felt that behaviorism reduced people to mere animals." is your answer</span>
Answer: Chapter 3: Bravery.
Explanation: Sal begins the story with her first moments in Lewiston. She overhears Margaret pleading with her father to tell Sal how they met, but Sal rudely refuses to hear the story. Sal marches glumly through their new house, situated only a few blocks from Margaret's, complaining about its size.