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Which of the following does not help to explain why, when both options are available, an alternate-air-source ascent is preferable to any type of independent emergency ascent?
Question 3 Select one:
It helps get the out-of-air diver to the surface faster.
It helps ensure both donor and receiver can breathe continuously throughout the ascent.
Air permitting, it allows the divers to make a slow ascent.
Air permitting, it allows the divers to make a safety stop.