The lower jaw in mammals is made up of

Options

A. Maxilla
B. Dentary
C. Mandible
D. Ethmoid.

Explanation

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks about the composition of the lower jaw in mammals.

2. **Understand the Options**: The options provided are:
- A) Maxilla
- B) Dentry
- C) Mandible
- D) Ethmoid

3. **Analyze Each Option**:
- **Maxilla**: This is the upper jaw in mammals, so it cannot be the correct answer for the lower jaw.
- **Dentry**: While this term is sometimes used in literature to refer to a part of the lower jaw, it is not the complete term for the lower jaw itself. The dentary is an anterior bone within the mandible.
- **Mandible**: This is the correct term for the lower jaw. It is the largest and strongest bone in the human face and is the only movable bone of the skull.
- **Ethmoid**: This is an unpaired bone located at the roof of the nasal cavity and is not related to the lower jaw.

4. **Conclusion**: The lower jaw in mammals is made up of the **mandible**.

5. **Final Answer**: C) Mandible

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