a fact is true and can be proven, while a(n) is someone’s belief or idea. device opinion reason fallacy

a fact is true and can be proven, while a(n) is someone’s belief or idea. device opinion reason fallacy
Answer
Brief Explanations:
A fact is objective and provable. An opinion represents personal beliefs or ideas. Devices are tools or strategies, reasons are justifications, and fallacies are false - reasoning. So the word that fits the description of "someone's belief or idea" is opinion.
Answer:
opinion