Final answer:
To diagnose Dracunculus medinensis, the correct option is 'none of the above' as the disease is diagnosed by the emergence of a female worm from the skin rather than through stool, skin snipping, or feces. The correct option is d.
Step-by-step explanation:
The appropriate specimen to diagnose Dracunculus medinensis, the parasite that causes dracunculiasis or Guinea worm disease, is none of the above (option d). The parasite is not diagnosed through stool, skin snipping, or feces. A diagnosis of Dracunculus medinensis is typically made when a female worm emerges from the skin.
However, in this context, the disease is often identified by patient history and visible signs of the worm emerging from a wound, generally in the lower limbs. If necessary, the worm can also be extracted and examined directly to confirm the diagnosis.
Eradicating the Guinea Worm entails preventing contamination by educating communities about the dangers of drinking unfiltered water and aiding them to access safe water sources. Moreover, water sources may be treated with larvicides to kill the parasite's larvae. The correct option is d.