How is post event management done?

You can encourage feedback & send Thank you's since everyone likes to be appreciated. Also a good thing to do is engage in social media. Make sure to also be balancing the budget. Update the website every once in a while. Some other things you can do is extend the duration of your event. Also, try taking the time to be critical of yourself & your team. You need to deal with your event in details to see what worked well and what worked a little less. By doing this you will more easily be able to highlight possible margins for progress for future events. Also try to not to forget to pay any bills.

the following key ideas correctly express the key sentence.

restate key idea: most people can learn to swim in ten short lessons.

restate key idea: the majority of water-accident victims require mouth-to-mouth breathing.

restate key idea: an empty, tightly closed gallon jug will support a tired swimmer.  

restate key idea: first aid is to prevent accidents as well as assist in rescue.

explanation: the key idea needs to have the same topic as the key sentence (drowning and safety).

is this multiple choice?