Match the columns and find the correct option
`{:(,"I",,"II",),((a),"Replacing bones ",(i),"Os cordis",),((b),"Dermal bones",(ii),"Pisciform bone of wrist",),((c),"Sesamoid bones",(iii),"Girdle bones",),((d),"Visceral bone",(iv),"Bones of cranium",):}`

Options

A. a-i, b-iii, c-ii, d-iv
B. a-ii, b-i, c-iii, d-iv
C. a-ii, b-iii, c-i, d-iv
D. a-iii, b-iv, c-ii, d-i.

Answer

To solve the problem of matching the types of bones with their respective examples, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Types of Bones**: We have four types of bones listed in Column I:
- (a) Replacing bones
- (b) Dermal bones
- (c) Sesamoid bones
- (d) Visceral bone

2. **Identify the Examples of Bones**: We have four examples listed in Column II:
- (i) Os cordis
- (ii) Pisciform bone of wrist
- (iii) Girdle bones
- (iv) Bones of cranium

3. **Match Replacing Bones**:
- Replacing bones are formed by the replacement of cartilage. Girdle bones are an example of replacing bones.
- **Match**: (a) Replacing bones → (iii) Girdle bones.

4. **Match Dermal Bones**:
- Dermal bones are formed by the ossification of the skin and are found in the side and roof of the skull.
- **Match**: (b) Dermal bones → (iv) Bones of cranium.

5. **Match Sesamoid Bones**:
- Sesamoid bones are embedded in tendons and an example is the pisiform bone of the wrist.
- **Match**: (c) Sesamoid bones → (ii) Pisciform bone of wrist.

6. **Match Visceral Bone**:
- Visceral bones are formed in soft organs, and os cordis is a visceral bone found in the heart of cattle.
- **Match**: (d) Visceral bone → (i) Os cordis.

7. **Final Matches**:
- A → iii (Girdle bones)
- B → iv (Bones of cranium)
- C → ii (Pisciform bone of wrist)
- D → i (Os cordis)

8. **Conclusion**: The correct option that matches all the pairs is:
- A is 3rd, B is 4th, C is 2nd, D is 1st. Therefore, the correct answer is option number 4.