Final answer:
The supported statement is (d) The British navy faced difficulties in maintaining its dominance in the war, as the entrance of France complicated British naval efforts and challenged their dominance.
Step-by-step explanation:
Based on the passage provided, the statement about the American Revolution that is supported is (d) The British navy faced difficulties in maintaining its dominance in the war.
The passage mentions the entrance of France into the war on the side of the American colonists after the Battle of Saratoga, which helped turn the tide of the war in favor of the revolutionaries.
Given that France at the time was Britain's archrival in global imperial matters, French intervention would have naturally extended to naval support, complicating British naval efforts and challenging their dominance at sea - a critical advantage the British had held over the Americans.
The narrative alludes to the Continental Army being inexperienced and poorly supplied, opposing the notion of a well-trained and disciplined army.
Moreover, it highlights the Continental Congress's struggles to form a functioning government and support an army, which suggests the colonists did not have a strong, well-organized government throughout the war.
Concerning the British army's numbers, although the passage does not directly state a consistent numerical advantage, it implies shifting strategies and focuses for the British, and thus does not definitively support (c).