Agree because you are a adult and you should be mature enough by now
The use of third person narration allows the author to tell the story from the perspective of what is seen and done and not what the character think or thought. This narration style helped the author to effectively handle the surprise climax at the end of the story.
Answer: D
Reasoning: If you think about it you cannot use it's in any other tense. Past tense, it's wouldn't work. Future tense, it's may not work.
Tactic: Process of Elimination
Cool um where is the question?