Answer:
A. Sworn by the National Assembly to meet until they came up with a French Constitution.
Step-by-step explanation:
The Tennis Court Oath was an oath sworn by the National Assembly to meet until they came up with a French Constitution.
Basically, the French National Assembly (French 3rd Estate) took this oath in 1789 to pledge allegiance to continually stay together and meet. With the oath taken, they pledged never to go in separate ways until they had a written French Constitution granted to them by the king.