Answer: C
Explanation: I took a test with this question and got it right.
B:American contributions to the columbian exchange
The French and Indian War was the North American conflict in a larger imperial war between Great Britain and France known as the Seven Years' War. ... British colonial forces, led by Lieutenant Colonel George Washington, attempted to expel the French in 1754, but were outnumbered and defeated by the French.
I think it is c but d also may be it so i hoped i helped a little!