Answer:
A) a reliable primary source
Explanation:
This is because the information is first hand and written by the subject .By doing this the researcher finds basic information required for the research , on the subject.
For this case , the aouthor Mary McCormick, so many important inkformation can be retrieved , such information may be ,
the tone , various themes and stlistic devices .
Apart from this the peresonal information can also be acquired.
