Final answer:
Taking a certification test as a personal trainer is an example of an acute time-limited stressor because it is a stressful event that is short in duration and ends after the test is completed.
Step-by-step explanation:
An acute time-limited stressor is an event that causes stress but is short in duration and will not persist over a long period. Looking at the provided options, taking a certification test as a personal trainer is an example of an acute stressor because it involves a short-lived stressful event that has a clear endpoint and doesn't have long-term consequences once it is over.
Enduring physical abuse as a child, experiencing the death of a loved one, or facing other enduring challenges are examples of chronic stressors because they have long-lasting effects and can persist over a prolonged period.