This is a test of commonsense with single/multi-choices. Complete the next sentence:

There are people at the top of a snowy hill on tube rings. Suddenly the people start riding down the hill. now multiple people

Choose your answer from: (1). are standing along the snow getting some views.; (2). are shown riding down the hill on the tube rings and they are all smiling and having a good time as they either ride down alone or connected to other tubers.; (3). are sitting on tubes as the mountain flashes past them.; (4). are falling while they are riding down down the hill.;
The answer is:
(2).