Which element is most abundant in a human body?
Correct Answer : b ) OxygenExplanation :
Oxygen is the most abundant element in the human body.
It makes up 65 percent of a person's total weight.
Approximately 94 pounds of the total weight of a person weighing 155 pounds is composed of the element oxygen.
This is mainly due to the water content of the body.
Water makes up most of the human body, and the two elements that make up water are oxygen and hydrogen.
Oxygen is also present in both our inhalation and exhalation.
Hence, (b) is the correct answer.