Chrome yellow and black strips painted on pylons or on the roof of a building identifies
Why this is the answer
Per AIP/TC AIM marking conventions, chrome-yellow-and-black strips on pylons or a building roof identify a fur farm, where low overflight can disturb the animals. They do not mark explosives or mining.
Reference
AIP Part 2 – Fur and Poultry Farms
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.