Thanks for taking the time to participate in the Poll.
Check back around April 12th for the answers and explanations.
:D

The questions and answers for this Scuba 101 were taken from

Diving Knowledge Workbook, PADI, 1996.

Good Job !!!
:)
You all got this question right. :D Guess next month, I'll have to get a little harder.
:o
The answer is

exhale making a continuous “ah” sound

This is a better practice than attempting to forcefully exhale. During the ascent you should strive to maintain a constant, normal lung volume. Forceful exhalation makes this difficult. In fact, studies involving lung physiology have shown that an exhalation that is to forceful can actually trap air in the lower portions of the lungs causing an overexpansion injury.

Thanks for participating

Mike