“When Caitlyn is with Tyler all of her problems seem to disappear. But as things get serious, she discovers Tyler's jealous side. Once she realizes her "perfect" boyfriend is as controlling as he is caring, Caitlyn is faced with a choice: she can either let this relationship define her, or find the courage to break away” (Goodreads)
A detail which provides specific evidence to <em>develop an author's claim</em> is the proof which backs up the claim of a person and validates their claim by making use of either:
- Statistical data
- Figures
- Scientific reports, etc
A supporting detail or evidence is important as it helps to provide evidence which shows that a claim is valid.
For example, if a person states that America has more blacks than Hispanics, he would have to bring statistical data from a trusted source to prove his claim.
Please note that your question is incomplete so I gave you a general overview to get a better understanding of the concept.
Read more about supporting detail here:
brainly.com/question/932605