The role of chlorophyll during photosynthesis is that of a

Options

A. molecule to trap light
B. reactant
C. synthesiser of `CO_(2)`
D. product

Answer

### Step-by-Step Solution:

1. **Identify the Role of Chlorophyll**:
- Chlorophyll is a pigment that plays a crucial role in photosynthesis. It is primarily responsible for capturing light energy.

2. **Location of Chlorophyll**:
- Chlorophyll is found in the chloroplasts of plant cells. Chloroplasts are the organelles where photosynthesis occurs.

3. **Function of Photosynthesis**:
- During photosynthesis, plants convert carbon dioxide and water into glucose using light energy. This process takes place in the chloroplasts.

4. **Light Absorption**:
- The light energy from the sun is absorbed by chlorophyll. This energy is essential for driving the chemical reactions that convert carbon dioxide and water into glucose.

5. **Conclusion**:
- Given the options provided, the role of chlorophyll during photosynthesis is that of a "molecule to trap light." Therefore, the correct answer is that chlorophyll acts as a light-trapping molecule.

### Final Answer:
Chlorophyll acts as a molecule to trap light during photosynthesis.

---