When in VFR flight within controlled airspace, a pilot must remain clear of cloud by at least
Why this is the answer
In VFR flight within controlled airspace you must stay at least 500 feet vertically and 1 mile horizontally from cloud (CAR 602.114(c)). Don't confuse this with the uncontrolled-airspace figure of 500 feet and 2,000 feet horizontally.
Reference
CARs 602.114 – Minimum Visual Meteorological Conditions for VFR Flight TC AIM-RAC – Control Zones, 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.