Final answer:
The mitochondria are the organelles where cell energy is released and ATP is produced. Option number d is correct.
Step-by-step explanation:
The organelles where cell energy is released from food molecules and where ATP molecules are produced are the mitochondria. Mitochondria are known as the "powerhouses" or "energy factories" of the cell. They are responsible for making adenosine triphosphate (ATP), which is the main energy-carrying molecule of the cell.
The process of making ATP using the chemical energy found in glucose and other nutrients is called cellular respiration, which occurs in mitochondria using oxygen and producing carbon dioxide as a waste product.