In short, I believe Darwin's theory was controversial in the 1800s because it contradicted the biblical view of creation.
(Sorry for the shortness.)
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I would say the answer is B. A is wrong because slavery was just being called for abolition. D is wrong because no women had the right to vote till 1890s.
I believe that the answer to the question provided above is that Antony supported the battle for suffrage of woman with an optimistic attitude.
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