The punctuation should be a colon, if not then a coma but colon is definitely it.
She wanted to accept the award with alacrity, but she couldn't make it to the award ceremony.
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.
I think that The answer is b.
