I'd go with B - Article. There are hundreds of good examples for the answer being B. For example, "a book" ('a' is an article - 'book' is a noun), "an apple" ('an' article - 'book' noun). Those are just the simple ones.
<em>Laughter can play a helpful role in MANY things, especially medical treatment. The reason it plays such a helpful role is because it makes people feel more happy and tends to take someone's mind off of what is going on around them. Once laughter is applied during a medical treatment, it is done to make someone feel less worried about what could be going on around them or how the treatment may go. This is commonly used by surgeons and kemo-therapy doctors when a patient is worried about what may happen.</em>
<em>Hope this helps.</em>
<em>-Northstar</em>
The answer is B. "Frightened."
You can draw the conclusion that the author is trying to communicate a frightened tone by the diction of the stanza. The following line of the text states: "In the silence of the night, How we shiver with affright..." This is a very telling detail that supports the idea that the author's tone was meant to be frightening.