The only article among these options is an, and that is the correct answer - <em>an </em>is the indefinite article.
It, her, and that are pronouns.
Maybe I think the answer is B. I'm not sure .
because humans count on coral reefs and the sealife they support,coral reefs should be able to count on humans too.
1. The speaker is in his chamber late at night reading old books.
2. The speaker starts feeling drowsy when he hears a tapping at the window.
3. The speaker comforts himself into believing that the tapping sound is a visitor who has come to see him.
4. The speaker is surprised to find no one when he opens his door.
5. The speaker gets even more frightened when the curtains rustle.
6. The speaker hears a noise at the window and a raven flies in.
7. The speaker whispers the name "Lenore", and he hears the same name echoed back.
