The smallest animal egg is that of

Options

A. Ostrich
B. Human female
C. Duck
D. Hen

Answer

To determine which of the given options has the smallest animal egg, we will analyze the sizes of the eggs mentioned in the question.

### Step-by-Step Solution:

1. **Identify the Options**: The options provided are:
- A. Ostrich
- B. Human female
- C. Duck
- D. Hen

2. **Research the Sizes of Each Egg**:
- **Ostrich Egg**: The size of an ostrich egg is approximately 15 cm in length.
- **Duck Egg**: Duck eggs are typically larger than hen eggs, usually ranging from about 3 cm to 10 cm.
- **Hen Egg**: Hen eggs generally range from about 2 cm to 8 cm.
- **Human Female Egg**: The human female egg, or ovum, is very small, measuring about 1 cm to 2 cm.

3. **Compare the Sizes**:
- Ostrich: 15 cm
- Duck: 3 cm to 10 cm
- Hen: 2 cm to 8 cm
- Human Female: 1 cm to 2 cm

4. **Determine the Smallest Egg**:
- Among all the options, the human female egg is the smallest, measuring about 1 cm to 2 cm.

5. **Conclusion**: Therefore, the smallest animal egg is that of the human female, which corresponds to option B.

### Final Answer:
**B. Human female**

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