Question

dont pass a school bus on your side of the road if:
never pass a school bus.
youre in a school zone.
its empty.
its stop signals are flashing.

Explanation:

In traffic laws, when a school bus's stop signals are flashing, it means children are likely getting on or off, so you must not pass on your side. "Never pass" is too absolute, school zone alone doesn't always prohibit passing, and an empty bus with non - flashing signals may have different rules.

Answer:

D. Its stop signals are flashing.