<span>B) In a democracy, it is a duty and privilege to vote for governmental leaders</span>
As·ser·tion (ə-sûr′shən)n.1. The act of asserting.2. Something declared or stated positively, often with no support or attempt at <span>proof.</span>
A documentary is surely a reliable source.
A is the best answer because when you relate yourself to the text,its easier to understand