Explain the why mitochondrion is called “kitchen of the cell”

No, mitochondria is actually power house of the cell. It is known as so because all the biochemical reactions for making ATP in the cells take place in it. Chloroplast is the kitchen of the cell because this is where all the food which is glucose is made in a plant cell.

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you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.