An author might choose precise words over
vague words because the author could want the
reader to visualize the writing. The reader could
be confused and visualize something else
entirely if the author uses vague words. A good
example is if the writer is writing instructions, hel
she would need to be very specific. Another
example is if the writer is composing a poem, it
would be best if he/she uses precise words of
what they're describing. Ex., Vague: The flower
is pretty. Precise: The pink tulip bloomed
beautifully.
One theme from Things Fall Apart is the complexity of Igbo society before the arrival of the Europeans. To assist this theme, Achebe incorporated the detailed explanations of the trial process and justice codes, family rituals, marriage customs, preparation processes of food and its production, divided leadership for the community, belief in religion and its practices, and the chances give to every man to be able to climb the clan’s ladder of triumph by his own doing.
Maybe he was fascinated in Frankenstein. Or maybe he was a physician and wanted to help.
C or the third choice.
Hope this helps.