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

A man is located inside a gym. He is talking while several people are using rowing machines. he

Options are:
* is working out on the machine as people record him from a distance.;
* asks them questions while he is sitting on the machines.;
* then practices rowing with a girl multiple times.;
* shows the mechanics of how the machines work.;
The answer is:
shows the mechanics of how the machines work.