Concept:ATP is the energy currency of the cell and is produced by the organelle responsible for cellular respiration.Explanation:The mitochondrion is the organelle where aerobic respiration occurs.During respiration, glucose is broken down to release energy in the form of ATP.Mitochondria are present in both animal and plant cells.Lysosomes digest waste, the nucleus controls activities, and ribosomes make proteins.Therefore, ATP production takes place in the mitochondrion.Answer:C. Mitochondrion