Answer:
Correct answer is c. Great Britain.
Step-by-step explanation:
As a winner of this war Great Britain gained control of all the territories that were once in the hands of France, and that is why C is the correct answer.
A is wrong as Spain didn't participate in the war itself.
B is not correct as France didn't gain, but actually lost its territories.
D. American Indians didn't gain territory, but gained certain benefits from the Proclamation of 1763.