____ produces a hormone called insulin.

Options

A. Pancreas
B. Thyroxine
C. Calcitonin
D. Adrenal glands

Answer

**Step-by-Step Solution:**

1. **Identify the hormone in question**: The question asks about the hormone called insulin.

2. **Determine the gland responsible for producing insulin**: The pancreas is the gland that produces insulin.

3. **Understand the function of insulin**: Insulin plays a crucial role in regulating blood glucose levels, helping to lower blood sugar when it is too high.

4. **Mention other hormones produced by the pancreas**: In addition to insulin, the pancreas also produces glucagon, which works to increase blood sugar levels when they are too low.

5. **Conclude with the correct answer**: Therefore, the correct answer to the question is "Pancreas."

**Final Answer**: The pancreas produces a hormone called insulin.

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