Answer:
It would be very hard to move, the trains and/or busses would probably run late because of the amount of people.
If there is way to many people, people may get rowdy and starting getting angry at each other, possibly resulting in someone getting injured.
D, notice how the first 3 answers are alike! They are all personal where as the 4th is more of a statement not made personally
Explanation:
He hadn't made any attempts to escape.
They had taken the boy to the doctor.
The cat had killed the mouse.
The dacoits had looted the shop.
They had accepted the invitation.