Melatonin is a hormone produced by :

Options

A. Adrenal gland
B. Pituitary gland
C. Pineal gland
D. Thymus gland

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks about the specific gland that produces the hormone melatonin.

2. **List the Options**: The options provided are:
- Adrenal gland
- Pituitary gland
- Pineal gland
- Thymus gland

3. **Recall the Function of Melatonin**: Melatonin is known to play a crucial role in regulating the body's sleep-wake cycle (circadian rhythms) and is involved in various physiological processes.

4. **Locate the Pineal Gland**: The pineal gland is situated on the dorsal side of the forebrain and is primarily responsible for the secretion of melatonin.

5. **Eliminate Incorrect Options**:
- The adrenal gland is involved in producing hormones like adrenaline and cortisol, not melatonin.
- The pituitary gland produces several hormones but does not produce melatonin.
- The thymus gland is involved in immune function and does not produce melatonin.

6. **Conclude with the Correct Answer**: Based on the information gathered, the correct answer is the **pineal gland**.

**Final Answer**: Melatonin is a hormone produced by the **pineal gland**.

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