Which term describes a mistaken belief that many people think is true?

• A. Myth
• B. Error
• C. Fallacy
• D. Folly

Answer: (C)

A fallacy is a mistaken belief that arises from faulty reasoning or misleading argument, often catching people because the presentation seems persuasive or widely accepted. It captures that sense of a belief feeling true not because the facts are solid, but because the reasoning behind it is flawed or it’s echoed by many.

Myth, while it can be a widely held belief, is typically a traditional story or narrative about the world rather than a specific error in reasoning. Error is a broad term for a mistake or inaccuracy, not necessarily tied to how people persuade themselves or others. Folly refers to foolishness or lack of good judgment, not to a specific mistaken belief shared by a group. So the word that best fits “a mistaken belief that many people think is true” is fallacy.