The last train……………… the station at 5.30 am.

Correct option is A

"Leaves" is in the simple present tense, used for scheduled or regular events, such as train timings. Since the time is fixed at "5.30 am," this is the most appropriate choice.
Information Booster:
1. The simple present tense indicates habitual actions or scheduled events.
2. Used with timetables, itineraries, and programs.
3. Ensures grammatical correctness for routine announcements.
4. It avoids unnecessary complexity for clear communication.
Additional Information:
· (b) will leaving: Incorrect form of the future continuous tense.
· (c) was left: Incorrect as it indicates a past passive action, not suitable for this context.
· (d) has been left: Present perfect passive doesn't describe routine schedules.