You need a hyphen when a number is written out from numbers 1-99. So in the case, the answer would be A.
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you need more info!!!!!!!!!!
And finally, the Fourteenth Amendment introduced the ideal of equality to the Constitution for the first time, promising “equal protection of the laws.” ... In fact, it made possible a new Constitution—one that protected rights throughout the nation and upheld equality as a constitutional value.
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The word that serves as a clue of cause and effect is "Since".