Name the cell organelles which contain chlorophyll.

Options

A. Mitochondria
B. Nucleus
C. Chloroplast
D. All of the above.

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the cell organelles that contain chlorophyll. Chlorophyll is a pigment essential for photosynthesis, the process by which plants convert light energy into chemical energy.

2. **Identifying the Organelles**: Among the options provided (mitochondria, chloroplasts, and "all of the above"), we need to identify which of these organelles contain chlorophyll.

3. **Analyzing Each Option**:
- **Mitochondria**: These organelles are involved in cellular respiration and do not contain chlorophyll.
- **Chloroplasts**: These are the organelles where photosynthesis occurs, and they contain chlorophyll pigments. Chlorophyll is found in the thylakoid membranes within the chloroplasts.
- **All of the Above**: This option implies that all listed organelles contain chlorophyll, which is incorrect since only chloroplasts do.

4. **Conclusion**: The only organelle that contains chlorophyll is the chloroplast. Therefore, the correct answer is chloroplasts.

### Final Answer:
The cell organelles that contain chlorophyll are **chloroplasts**.

---