A fallacy that argues something is true because many people believe it is true is which?

• A. Bandwagon
• B. Appeal to authority
• C. Ad populum
• D. Red herring

Answer: (A)

The bandwagon fallacy is at work here: it treats popularity as proof, arguing that a claim is true because many people believe it. This appeals to social pressure and the desire to go along with the majority rather than presenting real evidence. That makes it a biased, faulty way to judge truth, even though it feels persuasive. The other ideas don’t fit this pattern: appealing to authority relies on what a respected figure says rather than how many share the belief, and a red herring distracts from the issue. Ad populum is closely related and sometimes used interchangeably, but bandwagon focuses on the crowd aspect that this item targets.