Lennie was simply playing around as that’s his personality. but he was also very strong and used it accidently sometimes. use parts from the book like when george was talking about how he’s not the brightest but he is strong. or how lennie accidently killed the puppy just trying to play w it.
I think it's the second one.
Answer:
Claudette decided to stop straightening her hair because it was causing burns, hairloss, or sindging.