Final answer:
The practice of evaluating and recommending changes after solving a problem is called corrective action in the business world.
Step-by-step explanation:
After Wanda solved her customer's problem, she evaluated what caused it and recommended changes to the procedure to make sure it didn't happen again. This is called corrective action or problem-solving. It is a common practice in businesses to analyze and learn from past mistakes in order to improve processes and prevent similar issues in the future.