Which one of these concepts is part of a fiction story?

a. exposition
b. introduction
c. chunking

Is the answer a? and BTW what does chunking mean? Thanks You.

Chunking in this context is probably:

"Chunking (writing), a method of splitting content into short, easily scannable elements, especially for web audiences."

http://en.wikipedia.org/wiki/Chunking

Your answer -- a -- is correct.