SAT Question f5149550: Transitions answer and explanation

English - Transitions - Cause Effect Transition
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A staunch supporter of women’s voting rights, Wilhelmina Kekelaokalaninui Widemann Dowsett sought to coordinate the efforts of suffragists in her native Hawai‘i. ______ in 1912, she founded the National Women’s Equal Suffrage Association of Hawai‘i, an organization that lobbied for women’s voting rights in the US territory.
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Difficulty:Hard
Which choice completes the text with the most logical transition?