Which of the Following Is the Best Statement of Why

Which of the following is the best statement of why the British signed the peace treaty granting American independence?

A) The Americans had driven the British army out of North America.
B) The French had driven the British navy from the high seas.
C) The timing of the occasional American victories led to a global situation in which the British needed to salvage the rest of their empire by cutting their American losses.
D) They had sent a commission offering peace on prewar terms, which the Congress accepted in all particulars except refusing to remain in the empire.