Neubenkern is part of

Options

A. Human ovum
B. Human sperm
C. Foetus
D. Graafian follicle.

Explanation

To solve the question "Neubenkern is part of," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks about the structure known as "Neubenkern" and which biological entity it is a part of.

2. **Identify the Options**: The options provided are:
- Human ovum
- Human sperm
- Fetus
- Graafian follicle

3. **Recall the Definition**: Neubenkern is a term associated with the reproductive biology of sperm.

4. **Analyze Each Option**:
- **Human ovum**: This is the female gamete and does not contain Neubenkern.
- **Human sperm**: This is the male gamete and is known to have a structure called Neubenkern.
- **Fetus**: This refers to a developing organism and does not directly relate to Neubenkern.
- **Graafian follicle**: This is a structure in the ovary and does not contain Neubenkern.

5. **Confirm the Correct Answer**: Since Neubenkern is specifically associated with the structure of human sperm, we conclude that the correct answer is **Human sperm**.

6. **Final Answer**: Therefore, the answer to the question is **Human sperm**.