In the year 1780, the Revolutionary War looked like a contest of endurance in which Americans had the advantage.
In 1780, various battles had been fought but the Americans had been trained into becoming a modern fighting force.
In addition to this, they were on home territory which means that they had the knowledge of the terrain. This meant that they had the advantage in a contest that was based on which side could endure the longest.
In conclusion, option A is correct.
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