________ is the cell organelle which produces energy by the oxidation of food

Options

A. Mitochondria
B. Chlorophyll
C. Nucleus
D. Vacuole

Explanation

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for the name of the cell organelle responsible for producing energy through the oxidation of food.

2. **Review the Options**: The options provided are mitochondria, chlorophyll, nucleus, and vacuole.

3. **Analyze Each Option**:
- **Chlorophyll**: This is a pigment found in plants that helps in photosynthesis, not energy production from food.
- **Nucleus**: This organelle contains the cell's genetic material and controls cellular activities but does not produce energy.
- **Vacuole**: This organelle is involved in storage and maintaining cell turgor pressure, but it does not produce energy.

4. **Identify the Correct Option**: The only organelle that is primarily responsible for energy production through the oxidation of food is **mitochondria**.

5. **Understand the Function of Mitochondria**: Mitochondria are often referred to as the "powerhouse of the cell" because they convert the energy stored in food into a usable form, specifically ATP (adenosine triphosphate).

6. **Conclude the Answer**: Therefore, the correct answer to the question is **mitochondria**.

---