No person shall drop anything from an aircraft in flight
Why this is the answer
CAR 602.23 prohibits dropping anything from an aircraft in flight that creates a hazard to persons or property on the surface. Jettisoning is otherwise permitted if it's safe, so the controlling test is the hazard — not a parachute, a jettison area, or a blanket ministerial approval.
Reference
CARs 602.23 – Dropping of Objects
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.