What is the main idea of the text? a. People can see the private and public areas of the white house on a tour.
b. People can see many important rooms in the White House on a public tour.
c. People learn a lot about the White House on public tours, but do not see a lot it.
d. People are not allowed to tour the White House when important people are staying there.​

How does national geographic allow subjectivity and bias to appear in its video about the flu? a. it uses second-person narration to make the viewer feel guilty for not getting a flu shot. b. it uses the testimonial of a doctor who feels very strongly that all americans should be vaccinated. c. it includes an advertisement for an over-the-counter flu medication. d. it uses onminous music and a blue filter to make the video more frightening.