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Research shows that sugary drinks are one of the major determinants of obesity and diabetes, and emerging evidence indicates that high consumption of sugary drinks increases the risk for heart disease, the number one killer of men and women in the U.S.

Reducing our preference for sweet beverages will require concerted action on several levels—from creative food scientists and marketers in the beverage industry, as well as from individual consumers and families, schools and worksites, and state and federal government.

We must work together toward this worthy and urgent cause: alleviating the cost and the burden of chronic diseases associated with the obesity and diabetes epidemics in the United States.

Explanation:

answer: third

explanation:

quite an interesting way to teach topic sentences, because the answer to this question is the best definition of a topic sentence that one can present, it is as if answering the questions taught you how to do it, this is some real teaching, it is terribly well-done.

the topic sentence in this paragraph is:

topic sentences writers stay on track and keep a paragraph from becoming an aimless collection of sentences about an idea.

which incidentally tells you what a topic sentence should be.