The battles won by the British from the options you provided are:
- Quebec (specifically the Battle of Quebec in 1759 during the Seven Years' War)
- Fort William Henry (the fort was besieged and captured by the French, but the British forces were involved in its defense; hence it wouldn't be categorized as a British victory.)
- Fort Oswego (this fort was captured by the French in 1756, so it's not a British victory.)
- Montreal (the British captured Montreal in 1760 during the Seven Years' War.)
So, the battles that were won by the British are Quebec and Montreal.