Which of the following is a female sex hormone?

Options

A. Adrenaline
B. Esterone
C. Cortisone
D. Testosterone

Answer

To determine which of the following is a female sex hormone, we will analyze each option provided:

1. **Adrenaline**:
- Adrenaline, also known as Epinephrine, is a hormone that plays a crucial role in the body's fight-or-flight response. It is primarily involved in regulating visceral functions such as respiration and heart rate. Therefore, it is not classified as a female sex hormone.

2. **Estrone**:
- Estrone is a type of estrogen, which is a group of hormones responsible for the development and regulation of the female reproductive system and secondary sexual characteristics. Estrone is specifically known as a postmenopausal hormone, indicating its role in females, particularly after menopause. Thus, Estrone is indeed a female sex hormone.

3. **Cortisone**:
- Cortisone is a steroid hormone that is produced in response to stress. It is involved in various functions including metabolism and immune response. However, it is not related to the female reproductive system and is not classified as a female sex hormone.

4. **Testosterone**:
- Testosterone is primarily known as a male sex hormone. It plays a key role in the development of male reproductive tissues and the promotion of secondary sexual characteristics in males. Therefore, it is not a female sex hormone.

After analyzing all the options, the correct answer to the question "Which of the following is a female sex hormone?" is **Estrone**.

### Summary:
- **Correct Answer**: Estrone (Option B)