D) The British would cease the practice of impressing American sailors into the Royal Navy.
The Treaty of Ghent was an agreement signed between the U.S. and Great Britain in 1814, ending the War of 1812.
In overall, the treaty set that all conquered territory and possessions taking by either country from the other during the war, should be returned, and the boundary dispute about the United States and Canada would be solved by referring to an arbitration commission. And it allowed that various treaties of allegiance and land transfer between the Indians and the United States were made as well. Nowhere in the treaty was established that the British should cease the practice of impressing American sailors into the Royal Navy, this wasn't part of the settlement.