Hello,
The answer is option A "to create a more perfect Union".
Reason:
The constitution was created in order to form a better Union. Its not option B because the constitution is the very first step to forming the better country slavery wasn't abolished then Its also not option C because we broke free of Britain using "taxation without representation" which helps the colonists break free from Britain. Its also not option D because the country was already before women gained there rights.
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit