Read an excerpt from Al Gore's Nobel Lecture:


So today, we dumped another 70 million tons of global-warming pollution into the thin shell of atmosphere surrounding our planet, as if it were an open sewer. And tomorrow, we will dump a slightly larger amount, with the cumulative concentrations now trapping more and more heat from the sun.
What type of appeal does Gore use to warn about global warming?
A. He uses his position as vice president to persuade his audience.
B. He uses scientific facts to convince the audience.
C. He uses emotional words to persuade his audience.
D. He uses exaggerations to upset the audience.