Match the following and mark the correct option:
`{:(,"Column-I","Column-II"),((a),"Hyperthyroidism",(i)"Parthormone"),((b),"Hypocalcemic",(ii)"Cretinism"),((c),"Hypercalcemic",(ii)"Grave's disease"),((d),"Hypothyroidism",(iv)"Calcitonin"):}`

Options

A. `{:((a),(b),(c),"(d)"),((ii),(i),(iv),"(iii)"):}`
B. `{:((a),(b),(c),"(d)"),((ii),(iv),(i),"(iii)"):}`
C. `{:((a),(b),(c),"(d)"),((iii),(i),(iv),"(ii)"):}`
D. `{:((a),(b),(c),"(d)"),((iii),(iv),(i),"(ii)"):}`

Answer

To solve the matching question, we need to connect the items in Column I with the correct items in Column II based on our understanding of the terms related to thyroid and calcium regulation.

### Step-by-Step Solution:

1. **Identify Hyperthyroidism**:
- Hyperthyroidism refers to an overproduction of thyroid hormones. This condition is commonly associated with **Grave's disease**, which is an autoimmune disorder that leads to hyperthyroidism.
- **Match**: (a) Hyperthyroidism → (ii) Grave's disease.

2. **Identify Hypocalcemic**:
- Hypocalcemic refers to a condition where there is a lower than normal level of calcium in the blood. The hormone responsible for lowering blood calcium levels is **Calcitonin**, which is secreted by the thyroid gland.
- **Match**: (b) Hypocalcemic → (iv) Calcitonin.

3. **Identify Hypercalcemic**:
- Hypercalcemic refers to a condition where there is an elevated level of calcium in the blood. The hormone that increases blood calcium levels is **Parathormone** (also known as parathyroid hormone), which is secreted by the parathyroid glands.
- **Match**: (c) Hypercalcemic → (i) Parathormone.

4. **Identify Hypothyroidism**:
- Hypothyroidism refers to a deficiency of thyroid hormones, which can lead to a condition known as **Cretinism**. This condition is characterized by severe physical and mental impairment and is often due to a lack of iodine during pregnancy.
- **Match**: (d) Hypothyroidism → (iii) Cretinism.

### Final Matches:
- (a) Hyperthyroidism → (ii) Grave's disease
- (b) Hypocalcemic → (iv) Calcitonin
- (c) Hypercalcemic → (i) Parathormone
- (d) Hypothyroidism → (iii) Cretinism

### Correct Option:
The correct option based on the matches is:
- (a) → (ii)
- (b) → (iv)
- (c) → (i)
- (d) → (iii)