Multi-select problem: How does the next paragraph end?

A man is located inside a building. He kneels down on a mat while holding a pole. he

Choices: [I] shows how to lean holding the pole.; [II] demonstrates how to lift the pole with his knees.; [III] then uses the pole to pole vault over a bar.; [IV] is given a control of his weight as he lifts it over his head in the air.;
[I]