A vessel crossing a river on the Western Rivers, must keep out of the way of a power-driven vessel __________.

Correct Answer: Option D — All of the above

Inland Navigation Rules, specifically the Western Rivers rules, prioritize vessels ascending the river. Because descending vessels have the current behind them and are harder to maneuver, crossing vessels must yield to all power-driven vessels ascending the river, regardless of whether they are towing, to ensure safe passage in restricted channels.