A) 10\[{{m}^{2}}\]
B) 100\[{{m}^{2}}\]
C) 150\[{{m}^{2}}\]
D) 200\[{{m}^{2}}\]
Correct Answer: B
Solution :
[b] Alveoli are tiny air sacs within the lungs where exchange of oxygen and carbon dioxide takes place. These tiny alveoli, structures taken all together form a very large surface area to do the work of breathing. The alveoli cover a surface that measures more than 1,076.4 square feet (100 square metre).
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