An idea is likely to be considered "common knowledge" if:

An idea is likely to be considered "common knowledge" if it is widely known and accepted by the general public. Common knowledge refers to information that is so prevalent and universally recognized that it does not require citation when used in research or academic writing. Examples include widely accepted facts such as "the Earth orbits the Sun" or "water freezes at 0 degrees Celsius." This concept is essential in academia to distinguish between information that needs to be credited to a source and information that can be freely used.

The other options either describe information that is not widely recognized, requires specialized knowledge, or refers to specific forms of literature which do not inherently make something common knowledge. Thus, the recognition of common knowledge hinges on the widespread acceptance and general familiarity of the information within society.