D., Life. Since it is a more vague word and its meaning carries more weight than the others, I would say it has the most connotative associations.
Answer: text books divide the pages of information into unit chapters lessons in sections to make it easier for you to find what you need and to separate the different information based off time and dates.
It would cause the reader to think that too. and it could confuse the reader if the assumption is contradicted later on in the story.
hope i helped!