Modern classification, otherwise known as taxonomy, was invented so as to have a single system used throughout the entire world in understanding different types of beings in existence. This way you avoid having different names for same things.
The correct answer to your question is Guanine, so D on plato.
<em>Do not pick the other answer, it is incorrect!</em>
The correct answer is:
Cyst
its B. Organ b/c the plants root are part of the plant
