In eukaryotic cells, which organelle is the primary site for the Krebs cycle (citric acid cycle), a key stage in aerobic respiration?

✓ Correct Answer: Option B

The Krebs cycle, also known as the citric acid cycle, takes place in the mitochondrial matrix of eukaryotic cells, where it further oxidizes pyruvate derivatives to produce ATP, NADH, and FADH2.