Statement: At a railway level crossing, a bus collided with a running train; around fifty people died.\nCourses of Action:\nI. Immediately suspend the train driver.\nII. Try the bus driver in court for negligence.\nIII. Ensure that all level crossings are manned by the railways.

Introduction / Context:
Level-crossing crashes often involve failure to heed signals, poor visibility, unmanned gates, or unsafe driving. Appropriate action targets accountability and systemic safety rather than reflex punishment without facts.

Given Data / Assumptions:

• A moving train had right of way on tracks.
• A bus entered the crossing and collided, causing mass casualties.
• No evidence in the statement that the train driver violated protocol.

Concept / Approach:
Proceedings against the bus driver (II) for prima facie negligence (signal violation, gate breach, overspeed) are warranted, subject to investigation. Independently, improving infrastructure/operations by manning crossings (III) reduces recurrence—guards, barriers, alarms, and better sightlines mitigate human error.

Step-by-Step Solution:
1) Open investigation; collect CCTV, data logs, witness accounts.2) If negligence is indicated, file charges against the bus driver (II).3) Prioritize manning/conversion of unmanned crossings and grade separation in long term (III).

Verification / Alternative check:
Crash-reduction programs consistently show large risk drops after manning or grade separation; arbitrary suspension of compliant train drivers does not improve safety.

Why Other Options Are Wrong:
I (suspend the train driver) lacks basis; punishment must follow facts. D (All) wrongly includes I.

Common Pitfalls:
Blame-shifting without evidence; ignoring systemic fixes at hazardous crossings.

Final Answer:
Both II and III follow.