2. Which of the following is an example of operant conditioning?

a. Byron doesn’t go to the dentist because the last time he did, it was very painful.

b. Byron is afraid of dentists because the last time he went to the dentist, it was very painful.

c. Byron wants to go to the dentist because when his friend Gina went to the dentist, the dentist gave Gina a toy.

d. All of the above are examples of operant conditioning.