Mary Cooper's diary is a Primary Source. See the reason why below.
<h3>What is a primary source of information?</h3>
Primary sources are recordings of events or facts as they were first stated or occurred, with no interpretation or commentary.
It is knowledge presented for the first time or unique resources upon which additional study is built. Hence, Mary Cooper's diary is a primary source because the information therein were observed and recorded directly.
<h3>Is it a reliable source? Explain why.</h3>
Although her diary is a primary source, it is not reliable because it has not yet been peer reviewed.
Scholarly, peer-reviewed papers and books are examples of highly reliable sources. Professional or trade publications or books Magazine, book, and newspaper pieces from well-known corporations.
Note that her notes speak to observations that have not been fact checked.
<h3>What is the main idea of the source?</h3>
The main idea of the source is that the writer seems unwell most probably from ageing.
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