Which list describes the path oxygen takes to the blood?

bronchi, alveolar sacs, alveoli, capillaries
trachea, bronchi, capillaries, alveoli
larynx, trachea, bronchi, capillaries
pharynx, larynx, capillaries, alveoli

how does lung volume control inspiration?
a decrease in lung volume stops the intake of air from the nose and mouth.
an increase in lung volume starts the intake of air from the nose and mouth.
a decrease in lung volume decreases the pressure within the lungs so air can flow inside.
an increase in lung volume decreases the pressure within the lungs so air can flow inside.