Answer:
second paragraph support author's purpose in a physical attribute of the narwhal which make it unique in this way second paragraph support author propose...
It is most likely B. An intransitive verb doesn't have an object, the action verb(cheered) is in front as well.
I believe the answer is Memoir. Informational text is any text (or more specifically literature) that is non fictional, or factual.
B-He is upset by the sensitive nature of the discussion