Answer: Option A
Step-by-step explanation:
The bio molecules are the basic and main components of the food that we eat. It provides us energy and performs many vital role in the body of the organism.
The main bio molecules are carbohydrates, fats, protein and nucleic acids. The common thing in all the four bio molecules is that they are formed around carbon chains and rings.
All these molecules are formed by carbon atoms, and other components like oxygen , hydrogen, nitrogenous bases, amine groups et cetera are also attached on the rings based on the type of bio molecule.