Which are the Four Most Common Elements in the Human

Question

Which are the four most common elements in the human body?
A) hydrogen, calcium, oxygen and sodium
B) hydrogen, oxygen, iron and carbon
C) hydrogen, oxygen, carbon and nitrogen
D) oxygen, carbon, iron and nitrogen
E) oxygen, silicon, calcium and nitrogen

Accepted Answer

Hydrogen, oxygen, carbon, and nitrogen are the four most common elements in the human body. These four elements make up more than 99% of the atoms in the body.