ATC may authorize an aircraft equipped with a functioning two-way radio to transit a Control Zone under day SVFR provided the flight visibility and, when reported, ground visibility, are each not less than
Why this is the answer
For day Special VFR in a control zone, a non-helicopter needs flight visibility — and reported ground visibility — of at least 1 mile (CAR 602.117). The ½-mile figure applies only to helicopters.
Reference
CARs 602.117 – Special VFR Flight TC AIM-RAC – Control Zones, Special VFR Weather Minima
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.