Final answer:
Humanist beliefs are encapsulated in poetry that centers on humanity's potential, emphasizes virtue, and embraces reason over religious dogma, reflecting the movement's admiration for the cultural and moral heights achieved by ancient civilizations.
Step-by-step explanation:
The beliefs of the humanist movement are well represented in poetry that emphasizes the fulfillment of worldly love, the superiority of virtue, and the use of reason. Although humanists often did not reject religious institutions, they placed a greater emphasis on human potential and achievements, which can be seen in the poetry of that time. Humanism encouraged a focus on the beauty and dignity of humanity, drawing from the achievements and philosophical traditions of the ancient Greeks and Romans to guide contemporary culture towards the 'good life.' Due to the humanist belief in the importance of individual achievement and moral virtue, option c, which emphasizes the superiority of virtue, closely aligns with humanist ideals as it implies the celebration of human potential and ethical accomplishments.