Which of the following is a primary source?

A scientific paper is the primary source. A primary source is an item, document, recording, or any other source. Option C is correct.
Scientific papers are a specific sort of written work with certain characteristics: they are often published in a periodical called a journal, whose sole objective is to publish this type of work.
A primary source is an item, document, recording, or any other source of information created during the period being studied in the academic area of history.
A scientific paper is the primary source.
Hence,option C is correct.
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