The one way the Maze Runner and the Hunger Games are notably similar is the "survival" story-line that is implemented but the Maze Runner is more along the lines of a post-apocalypse story. The Hunger Games is more along the lines of a post-war story line but that part of the story (the separation of the Districts) is not seen/told until much later. Also, Both involve the killing of innocent children/adolescents by the authorities in charge as a means to find peace. The Hunger Games looks to use the “competition” to control the population and prevent an uprising. The Maze Runner (series not first film) is about finding a cure for civilization.
The sentence which is the most subjective is D. My mother had to be the best cook in the world. It is subjective because that is your own opinion - the other examples are just facts.
I think the most important element of a story is the plot. To me the plot is what makes the story intriguing and fun to read. Without a plot I would personally find the story boring and wouldn’t want to read it.