When operating in accordance with VFR, aircraft shall be flown
Why this is the answer
The defining condition of VFR flight under CAR 602.114/602.115 is operating with visual reference to the surface. VFR aircraft aren't categorically barred from control zones or aerodrome traffic zones (you may enter with clearance/communication), so 'operated with visual reference to the surface' is the only universally true statement.
Reference
CARs 602.114 – Minimum Visual Meteorological Conditions for VFR Flight CARs 602.115 – Minimum Visual Meteorological Conditions for VFR Flight
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.