The Nineteenth Amendment is the most important amendment U. S. politicians have made to the Constitution. Fact or opinion please help

In my opinion, since women currently make up 50.8% of the population, if the amendment was not around the US would not have the full country’s decision on who should be elected and would only be half of what could be the whole 100%, if that makes sense.

Correct textbook answers would be 1,3, and 5