I would have to say the answer is C.
A is incorrect since hydrogen is not an air pollutant.
B is incorrect because ozone is most definitely one of the top.
And D has cyanide which is a chemical for suicide during wars.
Hope this helps!
Answer: True
Explanation:
The disease called as the Osteogenesis imperfecta is the genetic disorder which causes imperfect formation of bones. This occurs due to abnormalities in the molecule of collagen which makes the matrix weak and this causes multiple fractures of the bone even before birth in severe cases. In milder cases the bones break with mild trauma.
I think it is False but I'm not 100% sure
