ADIZ rules normally apply
Why this is the answer
An Air Defence Identification Zone is a security measure, so CAR 602.145 applies its identification and reporting rules to all aircraft operating in or entering the ADIZ — not just high, fast or southbound traffic. The airspeed and altitude limits in the other options are inventions.
Reference
CARs 602.145 – ADIZ TC AIM-RAC – Defence VFR Flight Plans and Defence Flight Itineraries
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.