How can you judge reliability of a source on history or science?

• A. Check credentials, date, evidence quality, and presence of opposing viewpoints
• B. Length of article, number of pictures, author popularity, and publisher location
• C. The country of origin, publisher color, author's age, and price
• D. Whether the article has a bibliography

Answer: (A)

Judging reliability means looking at how trustworthy a source is by checking who wrote it, when it was published, how well it supports its claims, and whether it acknowledges other viewpoints. The best choice combines all of these signals: credentials show the author’s expertise, the date helps you judge currency or historical relevance, evidence quality shows claims are supported with good data or references, and noting opposing viewpoints demonstrates balance and thoroughness. Together, these elements give you a solid basis to trust or question the information.

Other factors like how long the article is, how many pictures it has, how popular the author seems, or where the publisher is located aren’t reliable alone. While having a bibliography can be helpful, it doesn’t by itself prove reliability. So focusing on credentials, date, evidence, and opposing viewpoints gives the strongest assessment.