Probably zoology. Just a guess, but I think that's the one.
Answer:
B because it includes an independent sentence followed by a dependent one.
Why:
A the semi colon is supposed to be a comma linking it to the next part
C the semicolon is not needed. it is one sentence
D the semicolon is supposed to be colon.
Creates an internal conflict
The climax usually contains the MOST tension because it is the height of the plot, and tends to be the most exciting part of the story.