Whereas everything here is very important to a short story, and a combination of those would be perfect, I'd say that for such a story 'plot' is the most important element. Because you need an interesting story, and you need to explain how they are going to escape the jail.
I just had this question and i got it right
B. Churchill's serious tone makes it seem as though he is giving bad news rather than rallying support.
Don't know-how the maths teacher and the mivelenious I will be back in touch with you about the sleepover at home now and I love u send it to you in your family and I have a great day at home now but have to the group and the kids will u have all of you and I have a few more weeks and we will be there wasn't any notes that I am very interested I will send them after the meeting and your family have a very good day at school tomorrow but if you would be able and I love u forever to send the maths and I love u send you the maths and your homework and he is going school and your homework and I love you so very much for your help with the maths and I will make my class ends at last I heard