B. One must appreciate nature’s beauty in order to understand life.
In the poem, “A Day for Wandering,” the narrator tells us that he set aside a day for aimlessly experiencing nature. In his experiences of that day, he mentions experiences of the five human senses in hearing (the woodlands ring), touching (Aeolian string), watching (the maiden-hair), and tasting/smelling (the perfume or “attars”). It is through this sensory experience, which is how humans experience life and come to understand it, that he wins the feeling of content. As such, to understand life, and because we use our senses to come to this understanding, a guaranteed way to come to do so is to appreciate/experience nature’s beauty because of all the senses involved.