Hey,
So imagine reading a book. When you read a book ....
you start imagining what you read!
But why?
Is it because of the voice .. no, not really.. B is OUT!
When me and you read a book, does the organization of the story hep us at all imagine anything ??? NOPE... C is OUT
Ideas and content... hmm no that cant be it, because I can be reading a poem that doesn't have a certain idea or content but yet manages to have me imagine something. D is OUT
A writer would not be bale to create a mental picture in his or her head (or in other words imagine) when the author uses good word choice..
A is your answer..
If your confused , read below for clarification..
Lets say I said something like
"The tall pencil danced across the paper with its best friend,the green eraser."
My word choice probably had you painting a picture in your head of a tall pencil with a green eraser on a paper. The length, idea, voice and content does not matter. Its the words that use that help people imagine things.
Hope this helped