Final answer:
The passage is best categorized as Poetic prose due to its use of descriptive language and emotional undertone, rather than being a straightforward, fact-focused scientific text.
Step-by-step explanation:
The passage provided seems to depict a scene involving intense emotions and graphic imagery of a frog dissection, which makes it a literary description rather than a scientific or objective one. Based on the descriptive language and emotional undertone, the correct categorization of the excerpt is Poetic prose. Poetic prose is a form of writing that conveys a narrative with the rhythmic and emotional qualities of poetry. In the case of this passage, it eschews the more sterile approach typical of a lab setting often described in biology textbooks or scientific observations and instead uses striking, sensory-rich language to evoke the narrator's emotional turmoil.