Answer: 1. Setting: a. The foggy, dark streets of London, 2. External conflict: e. Jekyll and Utterson disagree over the strange requests in Jekyll's will, 3. Theme: b. Humanity is both good and evil, 4. Internal conflict: d. Jekyll struggles to keep Hyde under control and 5. Plot: c. A doctor and scientist's experiment goes wrong.
Explanation: The setting of a story is the time and place where the story takes place (like the foggy, dark streets of London). The conflict is the struggle between opposite forces, usually between the main character and himself (internal conflict, like between Jekyll and Hyde), society or another character (external conflict, like Dr. Jekyll arguing with Utterson). The theme of a story is the message the author wants to express (like humanity is both good and evil). And finally, the plot is the group of events that develops the story (like a doctor and scientist's experiment goes wrong).