When should you question a source of credibility

These are the options

A.When the source has been translated from another language B. When the arguments made by the author of the source are consistent C. When you find multiple additional sources that support its arguments D. When you cannot find any other sources that support its arguments.

The Answer is D. When you cannot find any other sources that support its arguments.

Explanation:

A valid Information is universal and is acceptable all over the world. The media has a lot of reporters which authenticate the validity of information passed across. However when an arguments comes from just one source then such argument needs to be doubted because it may likely be a formulated or fake story.

do you have a list of sources to choose from?