Question 1: The correct answer to question 1 is “It allows the reader to see the chain of events that led to the crime as well as the steady progression of the narrator’s insanity.”
In story “The Black Cat”, Poe starts telling the story in a chronological order, mentioning first that the narrator is a normal person and then he starts changing his personality little by little, affecting his daily life and his relationship with his wife. And then it also affected his relationship with the black cat. By describing the events chronologically, the reader can see the narrator's gradual insanity.
Question 2: Poe chooses the first person point of view in the story which allows the reader to know the feelings and emotions of the narrator only and not of the rest of the characters. This use of point of view provides the reader a subjective side of the story since it is told by the narrator's description of the events and does not describe what really happened in the story. In this case the correct answer is “It gives readers insight into the tortuous thoughts and feelings of the man condemned to die.”