Answer:he killed Curley’s wife
Explanation: by snapping her neck because she was making too much noise.
She invited Lennie to pet her hair because he said he liked to pet soft things but he was too rough. She tells him to stop but he doesn’t. Then she starts to raise a fuss which is when Lennie puts his hand over her mouth to get her to be quiet. She starts to try to break free but can’t which only causes Lennie to get more panicked. He shakes her to get her to be quiet and ends up snapping her neck.