<span>A. by testing the author’s logic and reasoning </span>
The town follows a tradition that kills someone once a year. Everyone agrees that the tradition must be followed, simply because it's a tradition, that is until they themselves are chosen to die. The townspeople do not want to die, but they are unwilling to break from tradition.
I believe the plot resolution occurs when Enrique and his mother are reunited. The two believe their reunion will result in what they've dreamed about, but all too soon reality sets in. Enrique cannot find it within himself to appreciate the sacrifices his mother made for him, and he in turn, is disappointed.
Gregor wakes up, and finds out hes turned into a big bug. Hope it helps.