Lee started a new job as a cashier at the local grocery store. The store manager had Lee practice each task that needed to be accomplished. After completing a task correctly, the manager praised Lee for a job well done. After doing a task incorrectly, Lee was reprimanded, and the manager asked Lee to start the task over again. This is an example of _______________________. A. goal-setting theory B. reinforcement theory C. feedforward conditioning D. operant conditioning E. self-efficacy