Plants need energy from the sun, water from the soil, and carbon from the air. The plant uses the carbon to form the leaves and stem and roots. I can go more into detail in the comments if you need.
I know of a surety that A, B, and D all apply to Acids and must be false and completely opposite for Bases. That leaves me with the answer C. I don't remember learning about this in particular during Biology but I do believe that if any one was correct it would be that one. <u><em>My final answer is C.</em></u>
