Concept:A narrative hook is an opening device used to capture the attention of readers and keep them engaged in a literary work.
Explanation:The narrative hook is a piece of writing that the author uses to draw in readers and persuade them to continue reading.
It is often placed right at the beginning of a story so that the reader's interest is sustained as the plot unfolds.
This device can take the form of a bold statement, a puzzling question, or an exciting action sequence.
It should not be confused with suspense, which arouses curiosity and makes readers anxious about coming events.
A storyline is simply the sequence of events narrated, while a plot refers to the organised structure of those events.
Since the question asks for the device used to persuasively sustain reader interest, the correct answer is the narrative hook.
Answer:B. narrative hook