A. Oxygen 65%
B. Calcium 75%
C. Hydrogen 10%
D. Carbon 18%
Submitted by: Syed Nizakat Ali Shah
Oxygen is the most common element in the human body, comprising approximately 65.0% of body mass. Most of the oxygen present is found in the form of water.
Correct Answer: Oxygen 65% ✔
Last Updated: March 08, 2022