[One can consciously breat...] Which one of the following is a possibility for most of us in regard to breathing, by making a consc

For Competitive Exams

Which one of the following is a possibility for most of us in regard to breathing, by making a conscious effort?

One can consciously breathe in and breathe out by moving the diaphragm alone, without moving the ribs at all

The lungs can be made fully empty by forcefully breathing out all air from them

One can breathe out air totally without oxygen

One can breathe out air through eustachian tubes by closing both the nose and the mouth

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