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

There are shoes placed on the floor just lying there. someone

Available choices:
1). is pulling a string with their hands..
2). starts to take the shoe off they are in skates..
3). is standing in front of the shoe box and unrolls the lid and removes the two pieces..
4). puts their feet into one of their shoes very slowly..
The answer is:
4).