The author choose to concede the point and offers no rebuttal
The novels The Maze Runner and The 5th Wave both have the theme of survival. They both surround(focus on) a select group of kids that have leaders with big decisions to make. The Maze runner has to escape a "prison/test" to survive. In the 5th Wave the characters are trying to survive what they think is an alien invasion. Its set in a more apocalyptic setting.
The answer is most likely "Is"
The “hook” is the opening sentence that grabs the readers attention.
the answer is most likely the first sentence