Male hormone is

Options

A. Estradiol
B. Progesterone
C. Testosterone
D. Adrenaline

Explanation

To answer the question "Male hormone is," we will analyze the options provided and identify the correct male hormone step by step.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the male hormone, which is primarily responsible for the development of male secondary sexual characteristics.

2. **Evaluate the Options**:
- **Option 1: Estradiol**: This is primarily a female hormone, a type of estrogen, and is not responsible for male characteristics.
- **Option 2: Endosterone**: This is a male hormone but is considered a weak androgen (male hormone) with only 1/7th the potency of testosterone. It is not the primary male hormone.
- **Option 3: Testosterone**: This is the main male hormone responsible for the development of male secondary sexual characteristics, such as facial hair, deeper voice, and muscle growth.
- **Option 4: Aginoline**: This hormone is present in both males and females and is secreted by the aginoline gland, but it is not specifically a male hormone.

3. **Identify the Correct Answer**: Based on the evaluation, the most appropriate answer that represents the male hormone is **Option 3: Testosterone**.

4. **Conclusion**: Therefore, the male hormone is **testosterone**.