What direction do the wing-tip vortices from the left wing rotate?

The wing-tip vortices created by an aircraft's wings are the result of air flowing over the wings and the pressure differential that occurs between the upper and lower surfaces. In a conventional aircraft with the left wing moving forward, the air pressure on the upper surface is lower compared to the higher pressure on the lower surface. This difference in pressure causes the airflow to break away at the wing tips, forming vortices.

For a left wing, when the aircraft is viewed from behind, the rotation of these vortices is counter-clockwise. Therefore, if one were observing the wing from above, the flow pattern would appear to be rotating in this manner. However, since the question specifically pertains to the left wing, the correct answer intuitively reflects the behavior of those vortices, which indeed rotate counter-clockwise when observed from behind the aircraft. This rotation is consistent across various types of aircraft, regardless of their specific design or intended flight orientation.

The other choices presented do not accurately describe the nature of the aerodynamic phenomena involved. For instance, clockwise rotation doesn't occur for the left wing's vortices, and outward or inward directional terms don't properly capture the rotational nature of the vortices produced. Understanding this behavior of wing-tip vortices is crucial, particularly for flight