The correct answer is A) backing wind. In the Northern Hemisphere, a wind that shifts counterclockwise is called a backing wind. This means the wind direction is shifting in a counterclockwise direction, moving from a higher to a lower compass bearing. This is in contrast to a veering wind, which shifts in a clockwise direction. The other options are incorrect: B) Chinook wind refers to a warm, dry wind that occurs on the eastern side of the Rocky Mountains, not a wind shift direction. C) Veering wind refers to a wind that shifts in a clockwise direction, the opposite of a backing wind. D) Reverse wind is not a standard meteorological term for a wind shift direction.