What is a source?

As an AI language model, I do not have access to external sources. However, I can provide general information on sources. A source is any piece of information or evidence that is used to support a claim or argument. A source can be a person, organization, document, or a piece of research. When using sources, it is important to consider their credibility and reliability to ensure that they are accurate and unbiased. Additionally, it is essential to properly cite sources to give credit to the original author or researcher and avoid plagiarism.