Hormone responsible for spermatogenesis is

Options

A. Androgen
B. Progesterone
C. Testosterone
D. None of these.

Answer

To determine the hormone responsible for spermatogenesis, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Spermatogenesis**:
- Spermatogenesis is the biological process through which sperm cells (spermatids) are produced from germ cells in the male reproductive system.

2. **Identify Key Hormones**:
- Several hormones are involved in the regulation of spermatogenesis, but we need to identify which one is primarily responsible for the process.

3. **Consider the Options**:
- The options provided are:
A. Androgen
B. Progesterone
C. Testosterone
D. None of these

4. **Analyze Each Option**:
- **Androgen**: This is a class of hormones that includes testosterone, but it is not specific enough to be the answer.
- **Progesterone**: This hormone is primarily involved in the female reproductive system and is not responsible for spermatogenesis.
- **Testosterone**: This is a specific androgen that plays a crucial role in the development of male reproductive tissues and the production of sperm.
- **None of these**: This option can be eliminated since we have identified testosterone as a relevant hormone.

5. **Conclude the Answer**:
- Based on the analysis, the hormone that is primarily responsible for spermatogenesis is **testosterone**.

### Final Answer:
- The hormone responsible for spermatogenesis is **C. Testosterone**.