The imagery introduces the idea that death is a natural and ordinary part of one’s journey through life.
The poem says "Because I could not stop for death it kindly stopped for me". The speaker does not show a fear of death so any answer choices that show a fear of death is going to be inaccurate. This eliminates option B. The speaker also does not triumph over death. She gets in and rides in the carriage. The tone is more matter of fact rather than giving a feeling of a long and monotonous journey.