Option 1: C > O > H > N

This option states that carbon (C) is the most abundant element in the human body, followed by oxygen (O), hydrogen (H), and nitrogen (N). This is incorrect because oxygen is actually more abundant than carbon in the human body.

Option 2: O > C > H > N

This option is correct. It states that oxygen (O) is the most abundant element in the human body, followed by carbon (C), hydrogen (H), and nitrogen (N). Oxygen makes up a significant portion of our body mass due to its presence in water and other compounds.

Option 3: N > C > H > O

This option states that nitrogen (N) is the most abundant element in the human body, followed by carbon (C), hydrogen (H), and oxygen (O). This is incorrect as oxygen is more abundant than nitrogen.

Option 4: N > C > O > H

This option states that nitrogen (N) is the most abundant element in the human body, followed by carbon (C), oxygen (O), and hydrogen (H). This is incorrect as oxygen is more abundant than nitrogen.

Therefore, the correct answer is option 2, which states that the