A pilot on a Special VFR flight has been cleared to the circuit. Ahead, at a lower altitude, is a solid layer of stratus cloud. Remaining clear of cloud is the responsibility of
Why this is the answer
On a Special VFR flight, remaining clear of cloud is the pilot's responsibility (TC AIM-RAC), since Special VFR requires the aircraft to be operated clear of cloud and in sight of the surface — the controller does not assume that duty.
Reference
TC AIM-RAC – ATC Clearances, Instructions and Information TC AIM-RAC – Control Zones
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.