Certain characteristic demographic features of developing countries are

Options

A. high infant mortality, low fertility, uneven population growth and a very young age distribution.
B. high mortality, high density, uneven population growth and a very old age distribution.
C. high fertility, low or rapidly falling mortality rate, rapid population growth and yound age distribution
D. high fertility density, rapidly rising mortality rate and a very young age distribution.

Answer

To answer the question regarding the characteristic demographic features of developing countries, we can analyze the options provided and identify the features that are typically associated with developing nations.

### Step-by-step Solution:

1. **Understanding Demographic Features**:
- Demographic features refer to the statistical characteristics of populations, including birth rates, death rates, age distribution, and population growth rates.

2. **Analyzing Each Option**:
- **Option 1**: High infant mortality, low fertility, uneven population growth, and a very young age distribution.
- High infant mortality is common in developing countries, but low fertility contradicts the typical demographic trend.

- **Option 2**: High mortality, high density, uneven population growth, and a very old age distribution.
- High mortality and old age distribution are not characteristic of developing countries, which usually have younger populations.

- **Option 3**: High fertility, lower rapidly falling mortality rate, rapid population growth, and young age distribution.
- This option aligns well with the characteristics of developing countries. High fertility rates and falling mortality rates contribute to rapid population growth and a young age distribution.

- **Option 4**: High fertility, density, rapidly rising mortality rate, and a very young age distribution.
- While high fertility and young age distribution are correct, a rising mortality rate is not typical of developing countries, which usually see improvements in healthcare leading to lower mortality rates.

3. **Conclusion**:
- After analyzing the options, **Option 3** is the most accurate representation of the demographic features of developing countries. It highlights high fertility, a lower or rapidly falling mortality rate, rapid population growth, and a young age distribution.

### Final Answer:
The correct answer is **Option 3**: High fertility, lower rapidly falling mortality rate, rapid population growth, and young age distribution.

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