Final answer:
Xenophanes believed that human beings could improve their opinions, as they could not access complete truth. His view aligns with the Greek humanist value of enhancing understanding through reason and the ongoing quest for knowledge.
Step-by-step explanation:
Xenophanes, a pre-Socratic Greek philosopher, is known for his critique of the anthropomorphic view of the gods and for his early thoughts on epistemology, the theory of knowledge. Among his many philosophical contributions, Xenophanes posited that human beings could not access complete truth but could certainly improve their opinions towards the truth. Unlike his contemporary poets, who claimed divine inspiration, Xenophanes was critical of the idea that they held the truth in their verses. Therefore, he would most likely disagree with the notion that humans can find truth in poetic inspiration. In summary, the answer to the question is (b) Improve their opinions.
The insights of historical philosophers like Xenophanes underscore the point that the quest for knowledge is a continuous process, where truths are refined rather than fully apprehended. His perspective echoes the broader Greek humanist philosophy which valued human capacity for reason and improvement. The background information on Socrates, Plato, and Greek humanism helps to contextualize Xenophanes' belief in the ability of humans to enhance their understanding over time, reflecting the potential for ethical and intellectual growth.