Kim is writing an argumentative essay calling for stricter enforcement of clean air regulations. One of her paragraphs starts with the following topic sentence: Communities all over the nation are affected by air pollution.
What type of detail would be best to support this topic sentence?

A) description of factory processes which cause air pollution
B) anecdotes about children suffering with asthma in the Mid-West
C) scientific comparison of clean air molecules to dirty air molecules
D) statistics that show how many states are reporting dangerous air quality