Explanation:
The interior of the lungs is made up of spongy tissues containing many capillaries and around 30 million tiny sacs known as alveoli.
The alveoli are cup-shaped structures found at the end of the terminal bronchioles and surrounded by capillaries.
Kingdom plantae is the only kingdom that contains all of those characteristics
density, it's a mass per unit volume
I think it’s B, sorry if I’m wrong
