Choose the "hinge joint" from the given examples of joints in our body `:`
(i) Atlanto-axial joint
(ii)Elbow joint
(iii) Interphalangeal joint
(iv) `1^(st)` metacarpal carpo joint
(v) Knee joint
(vi) Pubic symphysis

Options

A. (i), (ii) and (iii)
B. (ii) ,(iii) and (vi)
C. (iii) , (iv) and (v)
D. (ii), (iii) and (v)

Answer

To solve the question of identifying the "hinge joint" from the given examples, we will analyze each option provided:

1. **Atlanto-axial joint**: This joint is classified as a pivot joint, which allows for rotational movement. Therefore, it is not a hinge joint.

2. **Elbow joint**: The elbow joint is a classic example of a hinge joint. It allows movement primarily in one direction (flexion and extension), similar to the movement of a door hinge. Thus, this is a hinge joint.

3. **Interphalangeal joint**: This joint is found between the phalanges of the fingers and toes. It also allows movement primarily in one direction (flexion and extension), making it another example of a hinge joint.

4. **1st metacarpal carpal joint**: This joint is a saddle joint, which allows for a greater range of motion than a hinge joint. Therefore, it is not a hinge joint.

5. **Knee joint**: The knee joint is often considered a modified hinge joint because it allows for flexion and extension, but also some rotation. However, it primarily functions as a hinge joint.

6. **Pubic symphysis**: This joint is a cartilaginous joint that allows for very limited movement. It is not classified as a hinge joint.

Based on this analysis, the hinge joints from the provided options are:

- **Elbow joint**
- **Interphalangeal joint**
- **Knee joint** (considered a modified hinge joint)

Thus, the correct answer includes the elbow joint, interphalangeal joint, and knee joint.

### Final Answer:
The hinge joints from the given options are:
- **(ii) Elbow joint**
- **(iii) Interphalangeal joint**
- **(v) Knee joint**