ill hit u up if i ever need help
The answer is D. Because the publication field specifies that <span>in which publication (magazine, book, and so on) the source can be found.
EDSeek or the Expanded Academic ASAP is a way of citation of different sources.</span>
I believe it is the last blue sentence
The best example of a primary source among these options that you've mentioned is an interview with her dad who is a Vietnam veteran. She can get all the details she needs from a person who was actually there.