Final answer:
When a gate near a drawbridge is lowering, the correct action is to stop and wait for it to rise again before proceeding to ensure safety and compliance with the law.
Step-by-step explanation:
If a gate near a drawbridge is about to lower across the road, the safest and most appropriate action to take is to Come to a complete stop and wait for the gate to rise before you proceed. This ensures not only your own safety but also that of other road users. Choosing to go around the gate, rushing under it, or stopping only if you can't make it in time could lead to dangerous situations and is against legal and safety regulations.