Jason says in his speech: "Drug abuse in America's cities is on the rise every day. About 20% more elementary school kids get hooked on narcotics today than in the 1960s. So, we can easily see that we've got a big problem. Now let's talk about what we can do about it." What is Jason's error here?
A) Jason failed to explain his main idea before citing a statistic.
B) Jason failed to make his supporting material dramatic enough for the audience.
C) Jason failed to cite the source of his supporting material.
D) Jason made no mistake; he used a clear, dramatic statistic in support of his point.
Answer: C