Final answer:
In the scenario where tasks are practiced one after another (AAA, followed by BBB, followed by CCC), Task B would experience the most retroactive interference as the practice of Task C could interfere with the recall of Task B. Task A is not affected by retroactive interference and Task C is practiced last, hence it is not interfered with by any subsequent task.
Step-by-step explanation:
The concept being discussed here is retroactive interference, which is a phenomenon in psychology where newer information interferes with the recall of older information. In the given scenario, the student practices three tasks in sequential order (AAA, then BBB, then CCC). Task B would experience the most retroactive interference because after learning Task B, the student moved on to practice Task C, which is likely to interfere with the recall of Task B. Task A is not expected to experience retroactive interference from Task B or Task C since it was practiced first. Task C cannot experience retroactive interference from subsequent tasks since it was practiced last. Therefore, each task does not experience the same level of retroactive interference.