The best way to decrease population of a country is

Options

A. to educate people
B. to have better houses
C. to kill people on larger scale
D. to practice and implement family planning

Explanation

To determine the best way to decrease the population of a country, we need to analyze the provided options step by step.

### Step-by-Step Solution:

1. **Evaluate the First Option: Educate People**
- Education plays a crucial role in increasing awareness about population control. When people are educated, they understand the implications of overpopulation on resources, health, and the environment. This awareness can lead to responsible family planning and a reduction in birth rates.
- **Conclusion:** This option is partially correct as education can lead to better family planning.

2. **Evaluate the Second Option: Have Better Houses**
- While having better housing can improve the quality of life, it does not directly address population control. Better housing may lead to better living conditions, but it does not inherently reduce the number of births.
- **Conclusion:** This option is incorrect in the context of decreasing population.

3. **Evaluate the Third Option: Kill People on a Large Scale**
- This option is unethical and illegal. Population control through violence is not a viable or acceptable method. It goes against human rights and ethical standards.
- **Conclusion:** This option is completely wrong.

4. **Evaluate the Fourth Option: Practice and Implement Family Planning**
- Family planning involves educating couples about contraceptive methods and reproductive health. By practicing family planning, couples can make informed decisions about the number and spacing of their children, which directly contributes to reducing population growth.
- **Conclusion:** This option is the most effective and ethical way to decrease population.

### Final Answer:
The best way to decrease the population of a country is to **practice and implement family planning**.