Where does the dark reaction take place?

Explanation

**Step-by-Step Solution:**

1. **Understanding Dark Reactions**: Dark reactions, also known as the Calvin cycle or carbon-fixing reactions, are the processes in photosynthesis that do not require light directly. They utilize the products of light reactions to convert carbon dioxide into glucose.

2. **Role of Light Reactions**: The light reactions of photosynthesis produce ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate), which are essential for the dark reactions.

3. **Location of Dark Reactions**: The dark reactions occur in the stroma of the chloroplasts. The stroma is the fluid-filled inner space of the chloroplast that surrounds the thylakoids (where light reactions occur).

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