Question

click the statement that best describes the role of each element in living organisms.
carbon dropdown
oxygen dropdown
hydrogen dropdown
dropdown options (shown for carbon): is the most abundant element by mass, makes up 60% of the atoms in living organisms, is a versatile element, and the basis of all living organisms.
done

Explanation:

For Carbon:

Carbon is the basis of organic molecules (like carbohydrates, proteins, nucleic acids, lipids) in living organisms. Its ability to form four covalent bonds and long chains/complex structures makes it versatile and essential for life's molecular building blocks. The option "is a versatile element, and the basis of all living organisms" matches Carbon's role.

By mass, oxygen is the most abundant element in living organisms (due to presence in water, organic molecules like carbohydrates, etc.). So the option "is the most abundant element by mass" fits Oxygen's role.

Hydrogen atoms are numerous in living organisms (e.g., in water, organic molecules with -OH, -CH₃ groups, etc.). It makes up about 60% of the total atoms in living systems. Thus the option "makes up 60% of the atoms in living organisms" is correct for Hydrogen.

Answer:

is a versatile element, and the basis of all living organisms

For Oxygen: