Final answer:
The word "discourses" in the phrase "Her eye discourses" best fits with option d. speaks, describing how eyes can communicate similarly to spoken language, conveying complex messages or expressing emotions non-verbally.
Step-by-step explanation:
The choice that best fits the meaning of "discourses" in the context of "Her eye discourses" is d. speaks. In this context, the word "discourses" is being used to describe how the eyes can communicate or express thoughts and emotions, similar to how one would express with spoken language. The eyes are said to hold a conversation without verbal speech. This figurative language is often seen in poetry and literature, where physical actions or features like eye movements are attributed with deeper meanings, including the capability of speech or communication.
This use of "discourses" aligns with the examples provided, where authors convey messages through visual rhetoric, using elements like line, light, and point of view, and demonstrate nuanced control over language to express ideas and emotions. Like Phillis Wheatley's manuscripts, which show control over textual emphasis, or the way Jeffers's poem guides the breath and emphasis through line, the word "discourses" here implies conveying complex messages, akin to a dialogue, without the outright use of words.