Which response is most correct with respect to wake turbulence?
Why this is the answer
All three statements are true (TC AIM-AIR, Wake Turbulence / Vortex Characteristics): wing-tip vortices drift with the ambient wind, rotate with a downward, circular motion, and every aircraft generating lift sheds them — so the most complete answer is 'all of the above.'
Reference
TC AIM-AIR – Wake Turbulence TC AIM-AIR – Wake Turbulence / Vortex Characteristics / General
Question reproduced verbatim from Transport Canada’s PSTAR Study and Reference Guide (TP 11919E). The answer key is Transport Canada’s; the explanation is ours.
A study aid — not a substitute for the official guide, the CARs, or your instructor.