Coronavirus is highly dangerous and life-threatening for elderly. This is due to a progressive decrease in secretion of

Options

A. Adrenaline
B. Vasopressin
C. Thymosin
D. FSH

Answer

To solve the question regarding why coronavirus is highly dangerous and life-threatening for the elderly, we need to identify the hormone that progressively decreases with age. Let's analyze the options provided:

1. **Adrenaline**: This is a stress hormone that helps the body respond to stress or fear. It does not decrease with age, so this option can be eliminated.

2. **Vasopressin (ADH)**: This hormone is secreted by the kidneys and helps maintain the body's salt balance. It also does not decrease with age, so this option can also be eliminated.

3. **Thymosine**: This hormone is involved in the immune response and is produced by the thymus gland. While it plays a role in regulating T-cells and B-cells, it does not significantly decrease with age, so this option can be eliminated as well.

4. **FSH (Follicle Stimulating Hormone)**: This hormone is involved in reproductive processes. It is known that FSH levels decrease with age, particularly in females during menopause. This decrease in reproductive hormones can lead to a weakened immune response, making elderly individuals more susceptible to infections, including severe cases of coronavirus.

Based on the analysis, the correct answer is **FSH (Follicle Stimulating Hormone)**, as its progressive decrease with age contributes to the increased vulnerability of elderly individuals to life-threatening conditions caused by viruses like coronavirus.

### Step-by-Step Solution:
1. Identify the context of the question: Why is coronavirus more dangerous for the elderly?
2. Analyze the options given: Adrenaline, Vasopressin, Thymosine, and FSH.
3. Evaluate each hormone:
- Adrenaline: Does not decrease with age.
- Vasopressin: Does not decrease with age.
- Thymosine: Does not significantly decrease with age.
- FSH: Decreases with age, especially in females.
4. Conclude that the decrease in FSH is linked to increased vulnerability to infections in elderly individuals.
5. State the final answer: FSH (Follicle Stimulating Hormone).