Answer:
Correct answer is B. The French building Fort Duquesne.
Step-by-step explanation:
Second option is correct as it led to confrontation between two countries, as building of fortress in 1754 created a stronghold for France in that region.
First option is not correct as governor of Virginia reacted on this event afterwards.
Third option is also not correct as Washington was engaged in conflict later.
Fourth option is not correct as the French built the forth, not colonist.