In humans, the embryo is protected in

Options

A. Peritoneal cavity
B. Amniotic cavity
C. Pleural cavity
D. Allantois.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks where the embryo is protected in humans. This requires knowledge of human reproductive anatomy and the development of the embryo.

2. **Identifying the Options**: The options provided are:
- A) Peritoneal cavity
- B) Amniotic cavity
- C) Pleural cavity
- D) Allantois

3. **Analyzing Each Option**:
- **Peritoneal cavity**: This is the space within the abdomen that houses various organs but is not specifically protective for the embryo.
- **Amniotic cavity**: This is the space surrounding the embryo filled with amniotic fluid, which provides cushioning and protection.
- **Pleural cavity**: This is the space surrounding the lungs and is not related to embryo protection.
- **Allantois**: This is an extra-embryonic structure involved in waste disposal and gas exchange but does not serve as a protective cavity.

4. **Conclusion**: The amniotic cavity is specifically designed to protect the embryo by providing a cushioning effect through the amniotic fluid. Therefore, the correct answer is option B) Amniotic cavity.

5. **Final Answer**: The embryo in humans is protected in the **amniotic cavity**.

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