Answer:
The second sentence is a run-on sentence
Explanation: A run-on sentence is when two or more independent clauses (phrases that can stand on their own as a sentence) are not connected properly. You can connect them with a comma, or a conjunction(and, so, etc)
The second sentence has two independent clauses, "you must be going somewhere nice" and "your outfit is so elegant". However, these aren't connected properly so the answer is the second choice.
The narrator from Edgar Allan Poe's "The Black Cat", by deciding to plea "not guilty due to insanity", is doing something many people charged with murder do: blaming their own acts on a certain "demonic" mindset, which can be caused by evil spirits or even drugs (legal or illegal). The narrator has a history of alcohol abuse, which, according to his own testimony throughout the short story, led him to cut one of his cat's eyes out of its socket. He'd also been violent to his wife, not only verbally, and said he'd committed violent acts precisely because of their malignant essence. This man is no good. Therefore, there's no point in validating his plea of "not guilty due to insanity" and he should indeed be charged with murder. After all, he killed his wife with the strike of an axe upon her head, just because she wanted to stop him from killing their cat. As the narrator admits, he was then possessed by unstoppable anger, and that's not a reason for claiming to have done anything due to insanity at all.
Answer:
The sentence from the story that best supports the idea that the event was of national importance is Papa glanced over toward the crowd. "Why that’s President Arthur himself!" he exclaimed.
Explanation:
It is well known that not all the events throughout the country are going to have the presence of the President, then when in the story "Behold the Brooklyn Bridge" it is mention by the character with total surprise that the President is in the place for the event, he gives it the level of national importance since it was part of the President's agenda.