Answer:
Chronological
Step-by-step explanation:
"Harry Potter and The Deathly Hallows" is a book where several events happen sequentially, following a chronological sequence where various situations are resolved, until reaching the climax of the story where the main problem is solved and the story is brought to a conclusion.
As already mentioned, the events are established in a sequential manner, in a determined period of time, which indicates that the author used a chronological text structure.