Which mystery does Yadi present to the group that Zoe calls an alien conspiracy theory?

• A. The Bermuda Triangle
• B. The Lost City of Atlantis
• C. The Zodiac Killer
• D. The Unicorn Sightings

Answer: (A)

Think of what an “alien conspiracy theory” usually refers to in pop culture: a puzzling mystery tied to extraterrestrial explanations rather than ordinary causes. The Bermuda Triangle fits that vibe perfectly. It’s a region famous for ships and planes reportedly vanishing, and over the years people have floated dramatic, extraterrestrial theories about what happened there. That kind of speculative, otherworldly explanation is exactly what Zoe is signaling.

The other options don’t line up with that label as well. Atlantis is a legendary saga more about myth or ancient history than modern alien theories; the Zodiac Killer is a real crime case investigated with evidence and motive, not aliens; unicorn sightings are mythical creatures, not a contemporary mystery framed around aliens. So the Bermuda Triangle is the mystery Yadi presents that Zoe would call an alien conspiracy theory.