option D. The conclusion that can be made on the impact of the 19th amendment based on the graph is that It completed the advance toward universal suffrage started by the 15th Amendment.
<h3>What is the 19th amendment?</h3>
This is the amendment of the United States that finally made women a part of the democratic process by giving them the right that they needed to vote.
The amendment gave women suffrage hence the answer to this question is option D.
Read more on the 19th amendment here
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