Secondary sources provide firsthand testimony and direct evidence interpret and analyze primary or other secondary sources store original reflections and correspondence can only be found in personal collections and private libraries

Secondary sources interpret and analyze primary or other secondary sources. Generally, secondary sources are sources which describe or comment on something which was presented for the first time in another source. In other words, secondary sources comment on primary sources, which are the original source of information.

For example, Anna Frank's diary is a primary source but texts written in order to explain, interpret or comment on Anna Frank's diary are considered to be secondary sources.

Another example: a Shakespearean sonnet is a primary source but texts written in order to interpret the sonnet are secondary sources.

So, options A (provide firsthand testimony and direct evidence) and C ( store original reflections and correspondence) describe primary sources. Option D (can only be found in personal collections and private libraries) is irrelevant because both primary sources and secondary ones can be found in many other places apart from personal collections and private libraries, such as public libraries, Internet, etc.

i love this article you wrote. it is intresting and i was convinced by it. at the ending you could say something like this, "support robots today if you agree." but so far so good. you did an awesome job : ).

explanation:

i don't really know the circumstances. i personally think not due to it not being fair for all parties and how hated i'd become if i thought it was a good thing.