Correct Answer - Option 5 : Both assumption I and II implicit
Assumption:
I. A few passengers are naughty --> True (Before traveling on the bus please collect the proper ticket for your travel or else will be fined Rs. 500 or 3 months in jail or both” written inside on a bus means there are some passengers who don't buy the tickets.)
II. It is necessary to take tickets before traveling --> True (Before traveling on the bus please collect the proper ticket for your travel or else will be fined Rs. 500 or 3 months in jail or both” written inside on a bus means it is necessary to buy tickets or you will be fined.)
Hence, both assumptions I and II implicit.