Which visual element of the National Geographic video most clearly sends a message that the flu is worrisome?
A. The photos of busy scientists at work
B. The bright colors on the diagrams of viruses
C. The images of a miserable little girl
D. The use of the word "flu" in the title

in our power to make a world happy - to teach mankind the art of being so - to a character hitherto unknown - and to have, as it were, a new creation intrusted to our hands, are honors that command reflection, and can neither be too highly estimated,

no. but, i heard its a good book. you could look up the answers or summary on some website.