French is easier and spoken in more countries.
The main character is examining the deceased monkey looking for a cause of death and has found multiple blood rings on it's stomach and has narrowed the cause of death down to just two causes, Simian Fever or Ebola. Hope this helps!
The obvious answer would be C. rhyme.
As you can see, each of these lines rhyme: sea rhymes with C, and me, and be. Those words sound similar, which means they rhyme. There are no metaphors (comparisons) and onomatopoeias (mimicking the sounds from nature) here, or alliterations (repetition of the same consonant) in this excerpt.