The answer is the first one
Complete dominance.... Hope this helps
Answer:
The Volume of the lungs that would produce 2 mmHg pressure decrease is

Explanation:
From the question we are told that
The volume of air in the lungs is 
The pressure difference for quit normal inspiration is 
The temperature of air in the lungs 
The pressure after normal expiration is at 
From ideal gas law we have that

Now since nRT is constant we have that

As the pressure decreased by 2 mmHg the volume becomes



there's really no specific answer but mine would be...
1. how does that light show from earth?
2. will that light ever dim?
3. are some stars bright but just not bright enough that we can see?