Answer:
Correct answer is Edward Braddock .
Step-by-step explanation:
Braddock is the correct answer as he was sent to led the British troops, but just after of year died during the conflict with France.
Washington is not correct answer because in this war Washington served under Braddock's command. On the other side, Washington later was the the commander in chief of the American forces which defeated British forces.
Franklin and Pitt were both politicians, and not soldiers. Therefore, two of them couldn't lead the army.