Question

which organelle does cellular respiration happen
nucleus
ribosome
mitochondria
cell wall

Explanation:

Cellular respiration is the process by which cells convert glucose and oxygen into energy (ATP), carbon dioxide, and water. Mitochondria are known as the "powerhouses" of the cell because they are the main site where cellular respiration occurs. The nucleus is involved in storing genetic information. Ribosomes are responsible for protein synthesis. The cell wall provides structural support and protection in plant cells.

Answer:

C. Mitochondria