What did Upton Sinclair mean by his comment, "I aimed at the public's heart, and by accident 1 hit it in the

stomach." ...

(1) his book, The Jungle, did not have any influence on its readers

(2) his book, The Jungle, had the effect he hoped for on its readers

(3) his book, The Jungle, convinced readers that meat processing plants were unsafe for

workers

(4) his book, The Jungle, convinced readers that the meat they were buying was often

contaminated