Final answer:
Studying for a test is not an example of waste, while waiting, reaching out to the Registrar, and procrastinating studying are examples of waste.
Step-by-step explanation:
The correct answer is c. Studying for a test. Waste refers to any activity or resource that does not contribute to the overall goal or purpose. In this case, studying for a test is not a waste because it directly contributes to the student's academic success. On the other hand, waiting in the waiting room, reaching out to the Registrar, and procrastinating studying are examples of activities that do not directly contribute to the desired outcome and can be considered as waste of time.