Air pressure (inside the lungs) is lowest when lung volume is highest, so the answer is B. when you breathe in your lungs expand, which makes the air molecules spread out, therefore the pressure is lower.
They all have instruments to "uncouple" oxidative phosphorylation from electron transport framework by giving an option system to protons to come back to the mitochondrial grid. As protons enter the lattice without going through ATP synthase, their vitality is discharged as warmth. So these produce warm by uncoupling those two procedures.
