Question 1324 Deck General

The correct answer is C) 5% or less. The reason for this is that the regulations for inert gas systems on cargo ships require the oxygen content of the gas or gas mixture supplied to the cargo tanks to be 5% or less by volume. This low oxygen content helps prevent the risk of explosions or fires in the cargo tanks. The other answer choices are incorrect because they do not meet the regulatory requirement of 5% or less oxygen content.