Which artifact is described as an illustrated manuscript with an unknown language and suspected hoax?

• A. Rohonc Codex
• B. Rosetta Stone
• C. Dresden Codex
• D. Voynich Manuscript

Answer: (A)

The key idea here is identifying a manuscript whose writing is undeciphered and whose authenticity is in doubt. The Rohonc Codex fits this description best: it’s a richly illustrated book with an unknown writing system, and it has long been suspected of being a hoax or at least of unclear provenance. The Rosetta Stone isn’t unknown in language terms—it helped unlock hieroglyphs by presenting several known scripts. The Dresden Codex is a genuine Mayan manuscript with deciphered glyphs. The Voynich Manuscript is also undeciphered, but it’s generally considered an authentic, mysterious text rather than a proven hoax. So the Rohonc Codex is the artifact described.