You are heading out to sea in a buoyed channel and see a quick flashing green light on a buoy ahead of you. In U.S. waters, you should leave the buoy __________.

Correct Answer: Option D — to starboard

U.S. Inland Rules follow the 'Red, Right, Returning' convention. When heading out to sea, the starboard side of the channel is marked by green lights, requiring the vessel to leave the quick flashing green buoy to starboard.