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

A baby is shown floating upside down in a pool. Trainers are teaching the child how to stay afloat. he

Select from:
I. successfully walks out of the pool..
II. is learning how to swim, keeping himself above water..
III. is tossed in the air, trying to catch as many balls as he can..
IV. is shown hanging on to hooks attached to a rope..
The answer is:
II.