An aircraft on a Special VFR flight has been cleared for a “straight in” approach. Because of low ceiling and poor visibility, the pilot is concerned about the exact location of a radio mast in the vicinity. Avoiding this obstruction is the responsibility
Why this is the answer
On a Special VFR straight-in, avoiding the radio mast is the pilot's responsibility (TC AIM-RAC, ATC Clearances). A Special VFR clearance does not make ATC responsible for obstacle clearance.
Reference
TC AIM-RAC – ATC Clearances, Instructions and Information
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.