The sentence that should be added to paragraph 2 to best develop the author's thesis is: To many, the magazine cover showed a hopeful American spirit and fostered the belief that women could do male-dominated jobs.
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Meaning of Thesis</h3>
Thesis refers to the central argument in a text. In the text provided above, we see that Rosie Riveter was an initiative of the government that was meant to push more women to join the industries during the war.
The second paragraph tells what was portrayed by the magazine cover.
Adding the option A sentence will further discuss the purpose of the cover and add to the thesis of the setence.
Learn more about thesis here:
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Adverbs modify adjectives, verbs, and other adverbs.
Transitions in a piece of writing help organize the text. Transitions can be found inside a paragraph, between paragraphs or between sections in a long writing.
Some very common transitional expressions can show addition, cause and effect, example, exception, sequence, conclusion or similarity. Using these expressions helps give the text meaning and organization, and they might help if we want to summarize a text.
According to everything explained above, the correct answer would be "C".