The correct answer is:
D. The molecules get converted to energy and other types of molecules.
When a rabbit eats a carrot, the nutrients in the carrot (such as carbohydrates, proteins, and fats) are metabolized. This process involves breaking down the molecules to extract energy, which the rabbit uses for various life processes. Additionally, some of the molecules may be used to build new molecules (such as body tissues), while others may be excreted as waste.