## **Core Concept**
The ovaries are female reproductive organs responsible for producing gametes (ova) and secreting sex hormones. The primary hormones produced by the ovaries are **estrogen** and **progesterone**, which play crucial roles in the menstrual cycle and maintaining pregnancy.

## **Why the Correct Answer is Right**
The correct answer, **. Relaxin**, is a protein hormone produced by the ovaries, but it is not exclusively an ovarian product in the context usually tested; however, its production is notably associated with the corpus luteum. More accurately, relaxin is also produced by the **decidua** and **placenta** during pregnancy. The main ovarian products are estrogen and progesterone.

## **Why Each Wrong Option is Incorrect**
- **Option A: Estrogen** - This is a primary female sex hormone produced by the ovaries, crucial for reproductive and sexual health.
- **Option B: Progesterone** - Also produced by the ovaries, specifically by the corpus luteum, this hormone is essential for preparing the uterus to implant a fertilized egg and for maintaining early pregnancy.
- **Option D: Inhibin** - This is indeed produced by the ovaries (by granulosa cells) and regulates the production of follicle-stimulating hormone (FSH) by the pituitary gland.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that while the ovaries produce **estrogen** and **progesterone**, the **placenta** also becomes a significant source of **progesterone** during pregnancy. Relaxin's role is less commonly emphasized but is critical in the context of cervical softening and pelvic girdle relaxation during pregnancy.

## **Correct Answer:** . Relaxin