Mindy has been attending Native American basket-weaving classes. Six sessions are required to be certified in basket-weaving. The sessions cost $50.00 each and require Mindy to travel 25 miles. Unfortunately, she has missed two of the sessions. Minday is not going to give up and is more determined than ever to complete her certification. She will sign up again to fulfill her commitment to become a certified basket weaver. This example best illustrates that_______________