Question 996 Deck General

The correct answer is B) Steam, air, or electricity. The reason this is the correct answer is that towing vessels are allowed to use various types of power, including steam, air, or electricity, to drive the cargo pumps of a tank barge. This is in accordance with the regulations governing the use of power on towing vessels and barges. The other options are incorrect because A) only steam is too restrictive, C) only air is not comprehensive enough, and D) air or steam only does not account for the use of electricity as a power source.