From what I got from the translation, it looks like they get asked a question and then they have to go into a room to choose their answer. Once everyone is in the rooms, the answer is revealed and those in the correct rooms win. Each girl is representing her sub unit.
The story here is that Hanamaru, Yoshiko, You, and Honoka are all in the incorrect room. Yoshiko thinks she's right because chuuni magic, Hanamaru is worried that Rin is alone, Honoka thinks they're ok since they have 4 people in the room, and You is worried that she's in the room Yoshiko picked.
Rin is crying because she thinks that since she's alone, she chose the wrong room. She's apologizing to Umi and Nozomi, but then it's revealed that she's in the correct room, so she starts to cry again because of it. The last image is some kind of score screen going from best to worst.