Read this line from the story: She knew almost as she was turning to look what she would see. The culprit, the source of all her
clean-up efforts. What does the word culprit suggest about the bears? They are persecuted unfairly by those in charge. They are thought of as criminals by the characters. They are a righteous foe for humans. They have many fans among the homeowners.
A is wrong you wouldn't say "is" you would say are. B is wrong to because "was" is not the correct verb to use. D is wrong because key, should be plural, keys C is correct, because it has subject and verb agreement.