The source of credibility can be determined by the date of publication. Thus, the correct answer is D.
What are the sources of information?
The sources of information refer to the place from where the information is collected. These sources of information can be documents, books, literature, and so on.
These sources can be primary and secondary sources. Primary sources are those sources that are the most closely related to the information's original source. Because they contain unprocessed data, researchers must interpret them. These include books, speech, letters, newspapers.
Secondary sources are sources that are derived information and analyzed from primary sources. These include reviews and criticism by authors.
Therefore, the credibility of these sources can be determined by the date of publication which shows how the latest information is provided for the research.
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