Which of the following is not a part of the female reproductive system in human beings?

Options

A. Ovary
B. Uterus
C. Vas deferens
D. Fallopian tube

Explanation

To solve the question "Which of the following is not a part of the female reproductive system in human beings?", we will analyze each option provided.

### Step-by-Step Solution:

1. **Identify the Options**: The options given are:
- A. Ovary
- B. Uterus
- C. Vast Difference
- D. Fallopian Tube

2. **Analyze Each Option**:
- **Ovary**: The ovary is a crucial part of the female reproductive system. It produces eggs (ova) and hormones such as estrogen and progesterone. Therefore, this option is part of the female reproductive system.
- **Uterus**: The uterus is another essential component of the female reproductive system. It is where the embryo implants and develops during pregnancy. Thus, this option is also part of the female reproductive system.
- **Vast Difference**: The vast difference (more commonly known as the vas deferens) is a part of the male reproductive system. It is responsible for transporting sperm from the testes to the urethra. Therefore, this option is NOT part of the female reproductive system.
- **Fallopian Tube**: The fallopian tubes are part of the female reproductive system. They are the site where fertilization occurs, as they transport the egg from the ovary to the uterus. Hence, this option is also part of the female reproductive system.

3. **Conclusion**: After analyzing all the options, we find that the **Vast Difference** is the only option that is not a part of the female reproductive system.

### Final Answer:
The correct answer is **C. Vast Difference**.

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