Franklin roosevelt was famous for his use of which were an attempt to appeal directly to the american public.

Hey there,
Franklin Roosevelt was famous for his use of restoring America's confidence in the government

Hope this helps :))

~Top

Rethink and reinvent

There is no reason to think the results are biased or not conducted properly but you should not assume the results are correct just because they were done in a laboratory so the answer would be c. it is likely to be reliable because the results support the conclusion presented.