Answer:
It would be A.) statisitics from a government website showing the cancer rate of secondhand smoke.
Explanation:
An interview could be from an unknown source, and answers are not fact proven. Blogs are personal records of experiences and are not credible as you can not completely trust the author. Wiki sites can be edited by anyone and it is not know if that information is still correct or if it is related to fact at all
A site is credible if it ends in .edu, .gov
