Answer: I don't know of the book you read, but..
Authors use historical times and revise them in such a way it's believable, immersive, and informative. They make sure their use of history isn't changed into an outlandish fashion to fit the time it's set in. They usually do this because you can't go back in history and show them what happened, so you must create a fictional yet historical piece to preserve the time.
Answer:
It will help them in the long run for other people will be able to read it and they will be able to put more words per line of a piece of paper
Explanation:
I believe the answer would be implicit wording
D, because it compares using like
Standing water is not good for the environment so it needs to be vanished and shall no longer be around humans or animals that can catch the deadly disease malaria !