D. replace a semicolon
hope this helps :)
This seems like it belongs more in the catagory of history but if the author is Thomas Jefferson, or any president from Jefferson until the Civil War than they are most likely for it
A is the answer to your question
"a testimonial" would most likely include positive information about one side of an issue, although it should be noted that this is not always the case with testimonials.
I would go with B based on the information provided here. However I would suggest that you go back and read through. It may make more sense the second time through.