Question

click the statement that best describes the role of each element in living organisms.
carbon makes up 60% of the atoms in living organisms
oxygen
hydroge
done
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

Explanation:

To determine the correct role of Oxygen in living organisms:

• "makes up 60% of the atoms" is incorrect (Hydrogen and Oxygen have high atomic counts but 60% atomic abundance is more about Hydrogen or a combination, and Carbon's prior incorrect option was misused here).
• "is a versatile element, basis of all living" is for Carbon (as it forms organic compounds).
• Oxygen is the most abundant element by mass in living organisms (due to its high atomic weight and presence in water, organic molecules, etc.).

For the Oxygen dropdown, the correct option is "is the most abundant element by mass".

Answer:

Oxygen: is the most abundant element by mass