Final answer:
An anecdote is used when you use a personal story as evidence.
Step-by-step explanation:
If you use a personal story as evidence, you are using an anecdote. An anecdote is a short and personal story that is used to illustrate or support a point. It is a type of evidence that relies on personal experiences or observations rather than authoritative sources or statistical data. For example, if you were writing an essay about the importance of wearing seat belts, you might share a personal story about how wearing a seat belt saved your life or someone you know.
Learn more about use of personal stories as evidence