A. It establishes the characters in the poem and describes their traits.
My general description of such a person is someone, anyone who encourages and inspires others to appreciate the positive qualities of life, such as, good hygiene, health, gentleness, contentment, and safety. These qualities may seem dull or cliche to many people, but anyone who practices these qualities and appreciates these qualities does find life much more rewarding as opposed to so many people who destroy their life with addictions, negative attitudes, slovenliness, criminal activity, despair etc.
Using the answer choices provided, D would be the most feasible one in this case.