Answer:
B. States an opinion
Explanation:
A) is incorrect you want to save that for the very end when you restate your thesis in conclusion.
C) is incorrect. You support your topic sentences in your middle body paragraphs.
D) is incorrect because your answers to any questions should and will be in the BODY of your essay not your very beginning statement.
-Visible
-In sight
-Viewable
-Evident
-Detected
-conspicuous- obvious/easily see
A, because it's simply stating they are harmful and the rest use you as an example
