Which of the following is an example of a weakening effect? Group of answer choices Betty hits her substitute teacher and is sent to time out. In the future, she continues to hit the substitute teacher Gina sees a toy car in a bucket. A peer reaches for the toy, and Gina cannot grab the toy The dog barks, and the owner shakes a metal can filled with coins near the dog's face. The dog barks less often in the future Alec gets a headache and immediately reaches for Ibuprofen