How far from any intersection should you not use your flashing red lights or stop arm on a school bus?

Answer: B — 60 metres

You should not use your flashing red lights or stop arm on a school bus within 60 metres of any intersection. This is because it could potentially confuse other drivers at the intersection and create a safety hazard for students getting on or off the bus. Options A, C, and D are incorrect because they are closer to or further from the intersection than the recommended distance of 60 metres. Option D in particular is an unsafe option as it is too close to the intersection and would not give enough time for other drivers to safely stop.