Answer : 2. "mitochodria"
Explanation :

Answer: B) mitochodria Explanation: Cellular repiration takes place in the mitochodria.   There are 3 phases of cellular respiration. They are: 1. Glycolysis (Fermentation), 2. Krebs Cycle, and 3. Electron Transport.   Glycolysis takes place in the cytoplasm. The Krebs cycle and electron transport takes place in the mitochondria.