Which source is likely to be the most unbiased?
a. immigration and america: a history by sarah stanley, phd. harvard university press, 2002.
b. good fences make good neighbors: why we must increase border security by ron riley. bass press, 2006.
c. "america's crisis" call-in talk radio show transcript. knnn. october 12, 2001.
d. libertdad! pamphlet produced by the center for immigrant rights, 2005.

The answer is A. B represents thoughts strongly for that of increased security therefore it is biased. Answer D is the same but for the opposing side. While answer C may seem like a good choice it is also wrong, is statistics that we be known as a convience sample and the reason it is biased and cannot be trusted is due to the fact that only those people with strong opinions will choose to voice that opinion.

Yeah i’ll call ya tomorrow but i’m not sure if you wanna talk about it later