In which part of the plot are the characters, setting, and conflict introduced? a. climax b. rising action c. events d. resolution

Well, the climax is the most exciting part of the story, so that wouldn't be where the characters, setting and conflict are introduced.  The resolution is at the end of the story.  The events are the most important points of the plot.  Rising action is when things start to get exciting.  I believe it's either rising action or the events.