The answer is B) It suggest a tone of worry. The reason is because the phrase "knitting their cheeks" means the that the llamas were moving their jaws. This along with the fact that they were contemplating the writer suggests that the llamas are unsure of the writer.
C)
Because the athlete has died, he will never see his record broken nor his fame diminished.
If there were more men in the world then there would be less kids because women produces children, if there were more women in the world, then there would be less differences.