An independent emergency ascent may be considered as the best response to an out-of-air/low-on-air situation: when the surface is closer than a buddy.
What is a BC?
A BC is an acronym for buoyancy control device and it can be defined as an essentially inflatable jacket with air pockets, that is worn by a scuba diver.
As a general rule, it is very important for a diver to enter or ascend into the water with a buoyancy control device (BC) partially inflated, in order to rise in the water and have control over his or her buoyancy.
However, in the event of a diving mishap, an independent emergency ascent may be considered as the best response during an out-of-air/low-on-air situation when the surface is closer than a buddy or any other diver in the water.
Read more on buoyancy here: brainly.com/question/12788506
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