Plants Need Carbon, Hydrogen, and Oxygen Atoms to Synthesize Organic

Multiple Choice

Plants need carbon, hydrogen, and oxygen atoms to synthesize organic molecules to make new leaves, roots, or stems. Which statement about where they get these atoms is correct?

A) The carbon atoms come from the air.
B) The carbon atoms come from the soil.
C) The oxygen atoms come from water through the roots.
D) The oxygen is breathed in by the plants.