I think: it creates a rhythmic pattern..
Answer:
b.
Explanation:
Planning ahead is always good, and you need a plot/ conflict in order to tell a climatic story.
I would say that A is the answer. B is irrelevant, C makes the point debatable as it acknowledges that not everyone has access and I feel like A is more important than D to the sort of people who would set questions
The prefix over means too much.