Statement: In Bombay, railway trains are indispensable for people in the suburbs to reach their places of work on time.Assumptions:Railway trains are the only mode of transport available in the suburbs of Bombay.Only railway trains run punctually.

Statement: In Bombay, railway trains are indispensable for people in the suburbs to reach their places of work on time.
Assumptions:
Railway trains are the only mode of transport available in the suburbs of Bombay.
Only railway trains run punctually.

Only assumption I is implicit

Only assumption II is implicit

Either I or II is implicit

Neither I nor II is implicit

Explanation:

Answer: Option B
Explanation:
That the railway trains are indispensable for people to reach the place on time does not mean that there are no other means of transport but shows that trains alone run on time. So, I is not implicit and only II is implicit.