The tennis court oath was a promise to
a. write a constitution
c. to end the powers of the nobility
b. to remove the king
d. to begin taxing the clergy select the best answer from the choices provided a b c d

The Tennis Court Oath was a promise to "a. write a constitution," since this was at the very beginning of the French Revolution, when members of the Third Estate were upset about being excluded from policy meetings. 

Good luck : )